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Note 9 - Net Loss Per Share - Components of Reconciliation of Numerators and Denominators Net Loss Per Share (Details) - USD ($)
3 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Net loss (numerator) $ (2,141,480) $ (2,591,888)
Shares (denominator) (in shares) 7,352,781 7,322,195
Basic and diluted net loss per share (in dollars per share) $ (0.29) $ (0.35)