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<!-- Created: Thu Aug 13 21:13:47 UTC 2026 -->
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        <link:definition>008 - Disclosure - Initial Public Offering</link:definition>
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        <link:definition>009 - Disclosure - Private Placement</link:definition>
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        <link:definition>010 - Disclosure - Related Party Transactions</link:definition>
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        <link:definition>011 - Disclosure - Commitments and Contingencies</link:definition>
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        <link:definition>014 - Disclosure - Segment Information</link:definition>
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        <link:definition>015 - Disclosure - Subsequent Events</link:definition>
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        <link:definition>996000 - Disclosure - Accounting Policies, by Policy (Policies)</link:definition>
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        <link:definition>996001 - Disclosure - Significant Accounting Policies (Tables)</link:definition>
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        <link:definition>996002 - Disclosure - Fair Value Measurements (Tables)</link:definition>
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        <link:definition>996003 - Disclosure - Segment Information (Tables)</link:definition>
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        <link:definition>996004 - Disclosure - Description of Organization Business Operations and Going Concern (Details)</link:definition>
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        <link:definition>996005 - Disclosure - Significant Accounting Policies (Details)</link:definition>
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        <link:definition>996006 - Disclosure - Significant Accounting Policies - Schedule of Class A Ordinary Shares Subject to Possible Redemption (Details)</link:definition>
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        <link:definition>996007 - Disclosure - Significant Accounting Policies - Schedule of Basic and Diluted Net Income (Loss) Per Ordinary Share (Details)</link:definition>
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        <link:definition>996008 - Disclosure - Initial Public Offering (Details)</link:definition>
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        <link:definition>996009 - Disclosure - Private Placement (Details)</link:definition>
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        <link:definition>996010 - Disclosure - Related Party Transactions (Details)</link:definition>
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        <link:definition>996011 - Disclosure - Commitments and Contingencies (Details)</link:definition>
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        <link:definition>996012 - Disclosure - Shareholders&#8217; Deficit (Details)</link:definition>
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        <link:definition>996013 - Disclosure - Fair Value Measurements - Schedule of Investments Held in the Trust Account (Details)</link:definition>
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        <link:definition>996014 - Disclosure - Segment Information (Details)</link:definition>
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        <link:definition>996015 - Disclosure - Segment Information - Schedule of Performance and Making Key Decisions Regarding Resource (Details)</link:definition>
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        <link:definition>000 - Document - Document And Entity Information</link:definition>
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  <xs:element name="FairValueMeasurementsScheduleofInvestmentsHeldintheTrustAccountDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_FairValueMeasurementsScheduleofInvestmentsHeldintheTrustAccountDetailsLineItems"/>
  <xs:element name="InterestIncomeOnCashAndCashEquivalents" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="alpx_InterestIncomeOnCashAndCashEquivalents"/>
  <xs:element name="DescriptionofOrganizationBusinessOperationsandGoingConcernDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="alpx_DescriptionofOrganizationBusinessOperationsandGoingConcernDetailsTable"/>
  <xs:element name="DescriptionofOrganizationBusinessOperationsandGoingConcernDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_DescriptionofOrganizationBusinessOperationsandGoingConcernDetailsLineItems"/>
  <xs:element name="UnitsIssuedDuringPeriodSharesNewIssues" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_UnitsIssuedDuringPeriodSharesNewIssues"/>
  <xs:element name="NumberOfSharesIssuedPerUnit" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_NumberOfSharesIssuedPerUnit"/>
  <xs:element name="NumberOfRights" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_NumberOfRights"/>
  <xs:element name="NumberOfOrdinarySharesUnit" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_NumberOfOrdinarySharesUnit"/>
  <xs:element name="TransactionCosts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="alpx_TransactionCosts"/>
  <xs:element name="CashUnderwritingFees" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="alpx_CashUnderwritingFees"/>
  <xs:element name="DeferredUnderwritingFee" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="alpx_DeferredUnderwritingFee"/>
  <xs:element name="OtherOfferingCosts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="alpx_OtherOfferingCosts"/>
  <xs:element name="PublicSharePricePerShare" type="dtr:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_PublicSharePricePerShare"/>
  <xs:element name="MoneyMarketFundsMaturityTerm" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_MoneyMarketFundsMaturityTerm"/>
  <xs:element name="ConsistedInvestments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="alpx_ConsistedInvestments"/>
  <xs:element name="PercentageOfNetBalanceInTrustAccount" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_PercentageOfNetBalanceInTrustAccount"/>
  <xs:element name="TrustAccount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="alpx_TrustAccount"/>
  <xs:element name="WorkingCapitalLoans" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="alpx_WorkingCapitalLoans"/>
  <xs:element name="InitialPublicOfferingDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="alpx_InitialPublicOfferingDetailsTable"/>
  <xs:element name="NumberOfDaysAfterCompletionOfBusinessCombination" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_NumberOfDaysAfterCompletionOfBusinessCombination"/>
  <xs:element name="PrivatePlacementDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="alpx_PrivatePlacementDetailsTable"/>
  <xs:element name="ExercisableAfterTheCompletionOfTheInitialBusinessCombination" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_ExercisableAfterTheCompletionOfTheInitialBusinessCombination"/>
  <xs:element name="RelatedPartyTransactionsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="alpx_RelatedPartyTransactionsDetailsTable"/>
  <xs:element name="RelatedPartyTransactionsDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_RelatedPartyTransactionsDetailsLineItems"/>
  <xs:element name="AggregateAmounts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="alpx_AggregateAmounts"/>
  <xs:element name="OutstandingPrincipalBalance" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="alpx_OutstandingPrincipalBalance"/>
  <xs:element name="AggregatePrincipalAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="alpx_AggregatePrincipalAmount"/>
  <xs:element name="ConversionOfWorkingCapitalLoansIntoUnit" type="dtr:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_ConversionOfWorkingCapitalLoansIntoUnit"/>
  <xs:element name="CommitmentsandContingenciesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="alpx_CommitmentsandContingenciesDetailsTable"/>
  <xs:element name="UnderwritingOptionPeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_UnderwritingOptionPeriod"/>
  <xs:element name="AdditionalUnitsIssuedDuringPeriodSharesNewIssues" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_AdditionalUnitsIssuedDuringPeriodSharesNewIssues"/>
  <xs:element name="PercentageOfInitialPublicOfferingPrice" type="dtr:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="alpx_PercentageOfInitialPublicOfferingPrice"/>
  <xs:element name="PercentageOfDeferredUnderwritingCommission" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_PercentageOfDeferredUnderwritingCommission"/>
  <xs:element name="ProspectusLockUPPeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_ProspectusLockUPPeriod"/>
  <xs:element name="ShareholdersDeficitDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="alpx_ShareholdersDeficitDetailsTable"/>
  <xs:element name="SharesNoLongerSubjectToForfeiture" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_SharesNoLongerSubjectToForfeiture"/>
  <xs:element name="PercentageOfAggregateConversion" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_PercentageOfAggregateConversion"/>
  <xs:element name="ClosingOfInitialPublicOffering" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_ClosingOfInitialPublicOffering"/>
  <xs:element name="MinimumDaysPriorWrittenNoticeOfRedemption" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_MinimumDaysPriorWrittenNoticeOfRedemption"/>
  <xs:element name="ClassOfWarrantOrRightRedemptionPrice" type="dtr:perShareItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="alpx_ClassOfWarrantOrRightRedemptionPrice"/>
  <xs:element name="NumberOfTradingDaysForDeterminingTheSharePrice" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_NumberOfTradingDaysForDeterminingTheSharePrice"/>
  <xs:element name="NumberOfConsecutiveTradingDaysForDeterminingTheSharePrice" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_NumberOfConsecutiveTradingDaysForDeterminingTheSharePrice"/>
  <xs:element name="WarrantsMayNotBeTransferredAssignedOrSoldUntilConsummationOfTheInitialBusinessCombination" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_WarrantsMayNotBeTransferredAssignedOrSoldUntilConsummationOfTheInitialBusinessCombination"/>
  <xs:element name="PercentageOfOutstandingPublicWarrants" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_PercentageOfOutstandingPublicWarrants"/>
  <xs:element name="ClassANonRedeemableMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_ClassANonRedeemableMember"/>
  <xs:element name="ClassAOrdinarySharesParValue00001PerShareMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_ClassAOrdinarySharesParValue00001PerShareMember"/>
  <xs:element name="ClassAOrdinarySharesSubjectToPossibleRedemptionMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_ClassAOrdinarySharesSubjectToPossibleRedemptionMember"/>
  <xs:element name="ClassARedeemableMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_ClassARedeemableMember"/>
  <xs:element name="ClassBNonRedeemableMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_ClassBNonRedeemableMember"/>
  <xs:element name="FounderShareMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_FounderShareMember"/>
  <xs:element name="InvestmentCompanyActMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_InvestmentCompanyActMember"/>
  <xs:element name="NonRedeemableClassAOrdinarySharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_NonRedeemableClassAOrdinarySharesMember"/>
  <xs:element name="NonRedeemableClassBOrdinarySharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_NonRedeemableClassBOrdinarySharesMember"/>
  <xs:element name="PrivatePlacementWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_PrivatePlacementWarrantsMember"/>
  <xs:element name="PrivateRightsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_PrivateRightsMember"/>
  <xs:element name="PrivateUnitsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_PrivateUnitsMember"/>
  <xs:element name="PromissoryNoteMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_PromissoryNoteMember"/>
  <xs:element name="PublicRightsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_PublicRightsMember"/>
  <xs:element name="PublicShareMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_PublicShareMember"/>
  <xs:element name="PublicWarrantMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_PublicWarrantMember"/>
  <xs:element name="PublicWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_PublicWarrantsMember"/>
  <xs:element name="RedeemableWarrantsEachWholeWarrantExercisableForOneClassAOrdinaryShareAtAnExercisePriceOf1150Member" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_RedeemableWarrantsEachWholeWarrantExercisableForOneClassAOrdinaryShareAtAnExercisePriceOf1150Member"/>
  <xs:element name="RepresentativeSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_RepresentativeSharesMember"/>
  <xs:element name="RightsEachWholeRightToAcquireOnefourthOfOneClassAOrdinaryShareMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_RightsEachWholeRightToAcquireOnefourthOfOneClassAOrdinaryShareMember"/>
  <xs:element name="SponsorMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_SponsorMember"/>
  <xs:element name="SubscriptionReceivableMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_SubscriptionReceivableMember"/>
  <xs:element name="TrustAccountMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_TrustAccountMember"/>
  <xs:element name="UnderwritingAgreementMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_UnderwritingAgreementMember"/>
  <xs:element name="UnitsConsistingOfOneClassAOrdinaryShare00001ParValueOneRedeemableWarrantToAcquireOneClassAOrdinaryShareAndOneRightToAcquireOnefourthOfOneClassAOrdinaryShareMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_UnitsConsistingOfOneClassAOrdinaryShare00001ParValueOneRedeemableWarrantToAcquireOneClassAOrdinaryShareAndOneRightToAcquireOnefourthOfOneClassAOrdinaryShareMember"/>
  <xs:element name="ScheduleOfBasicAndDilutedNetIncomeLossPerOrdinaryShareAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_ScheduleOfBasicAndDilutedNetIncomeLossPerOrdinaryShareAbstract"/>
  <xs:element name="ScheduleOfClassAOrdinarySharesSubjectToPossibleRedemptionAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_ScheduleOfClassAOrdinarySharesSubjectToPossibleRedemptionAbstract"/>
  <xs:element name="ScheduleOfInvestmentsHeldInTheTrustAccountAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="alpx_ScheduleOfInvestmentsHeldInTheTrustAccountAbstract"/>
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</xs:schema>
