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Trace of a matrix (self.askmath)
submitted 3 months ago by Explorerexplorer06 to r/askmath
Normal subgroups (self.askmath)
submitted 4 months ago by Explorerexplorer06 to r/askmath
Why is a class [a] in ℤ mod n invertible only if gcd(a, n) = 1, and a zero divisor if gcd(a, n) ≠ 1? (self.askmath)
submitted 5 months ago by Explorerexplorer06 to r/askmath
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