Share capital (Schedule of valuation assumptions used for warrants in private placements) (Details) - Warrants [Member] - Private placement [Member] - $ / shares |
6 Months Ended | 12 Months Ended |
|---|---|---|
Apr. 30, 2026 |
Oct. 31, 2025 |
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| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||
| Share price | $ 0 | $ 0.8 |
| Exercise price | $ 0 | |
| Expected life | 0 years | |
| Volatility | 0.00% | |
| Risk-free interest Rate | 0.00% | |
| Minimum [Member] | ||
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||
| Exercise price | $ 0.4 | |
| Expected life | 2 years | |
| Volatility | 102.64% | |
| Risk-free interest Rate | 3.69% | |
| Maximum [Member] | ||
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||
| Exercise price | $ 0.8 | |
| Expected life | 3 years | |
| Volatility | 122.96% | |
| Risk-free interest Rate | 4.31% |
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- Definition Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Price of a single share of a number of saleable stocks of a company. No definition available.
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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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