Abstract algebra problem practice
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Good problem book on Abstract Algebra
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A high school Olympiad problem
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Strong Mathematical Induction: Why More than One Base Case?
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Finding the derived group
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Path to Combinatorics Problem [$1.11$]
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Finding counterexamples for infinite series.
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problems in group theory
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using trial and error in math problems
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A challenge on the parabola
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Difficulty in finding a counterexample
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Prerequisites for Algebraic Geometry
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Proving Hartshorne's Exercise I-1.9 by using exercise I-1.8
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Combinatorial proofs: having a difficult time understanding how to write them out
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Discrete Math: Writing Proofs
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The logic of the AC Method of factoring quadratic polynomials
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Algebra struggles: 2 problems in 1
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An imo shortlist algebra question