Prepayments and Other Receivables (Details) - Bsset Technology Limited [Member] - USD ($)	May 17, 2023	Mar. 28, 2023	Mar. 31, 2024
Prepayments and Other Receivables [Line Items]
Investment transferred	$ 80,010	$ 100,013
Allowance for expected credit loss			$ 2,076

The amount of allowance account credit for losses of financial asset.

Amount of investment transferred.

No definition available.

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=math_BssetTechnologyLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: