Math Proof Training and Practice Forum

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Participate in free math proof training events and practice your proofs with expert math guides helping you step by step.
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Math Proof Training Camp and Practice Guidelines
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Challenge Solution Manuals For The Math Challenges
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A gap in resources that should help students visualise mathematics
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N Queens problem
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Intelligence and math abilities improvement
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Bishops and permutations on chessboard
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Indirect Proof (open) The most basic math proof I've ever seen
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Proof in number theory: the sum of all divisors of n
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Challenge Math Challenge Thread (October 2023)
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Challenge Math Challenge - July 2023
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Challenge Math Challenge - June 2023
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Challenge Math Challenge - December 2021
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Challenge Math Challenge - November 2019
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Challenge Math Challenge - November 2021
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Challenge Math Challenge - October 2021
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Challenge Math Challenge - September 2021
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Simple Induction Induction proof of Polynomial Division Theorem
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I have a few questions about Formalization & Pseudo-code
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Challenge Math Challenge - July 2021
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Challenge Math Challenge - August 2021
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How to write this set in set-builder notation?
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Challenge Math Challenge - June 2021
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Proving a statement about inclusion of subspaces
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Challenge Math Challenge - December 2020
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Challenge Math Challenge - October 2020
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Challenge Math Challenge - January 2021
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Span(S) is the intersection of all subspaces of V containing S
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Help with a proof regarding convergent sequence (proof by contradiction)
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Challenge Math Challenge - February 2021
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Challenge Math Challenge - May 2021
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Showing continuous function has min or max using Cauchy limit def.
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Changing the Statement Combinatorial proofs & Contraposition
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Challenge Math Challenge - April 2021
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Technique for proving Inclusion-Exclusion principle combinatorically
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Simple Induction Interesting Algebra Problem
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Challenge Math Challenge - March 2021
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From the limit of the derivative, infer the behavior of the antiderivative
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Indirect Proof Proof verification: sequence a_n=(−1)^n does not converge
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Existence of isomorphism ϕ:V→V s.t. ϕ(ϕ(v))=−v for all v∈V
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Challenge Math Challenge - September 2020
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Inequalities Since ε is arbitrarily small, do the inequalities hold?
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Det of Triangular-like Matrix & getting stuck in Algorithmic Proof
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Non Existence An argument involving well-orders
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Basel Problem Integral: Solving with Calculus
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Proving that a square of an odd integer is also odd
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Showing that real symmetric matrices are diagonalizable
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Disproving a statement about whole numbers
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Can I use recursion/induction to show that N <= x < N+1 for x real
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Contradictory Proof of Supremum of E: Is it Circular?
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Stuck at proving a bounded above Subsequence
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Challenge Math Challenge - November 2020
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Difficulty with "Exists" & "Let" or "Arbitrary"
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Simple Induction Help with Lemma for proof of AM-GM inequality
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Sum of rational and irrational is irrational
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Constructive Proofs (open) Boundaries on the roots of splitting real polynomials
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Changing the Statement Proving $\zeta(2)=\frac{\pi^2}{6}$ via Geometric Series & Substitutions
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Simple Induction Direct Proofs regarding Induction
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Your favorite Eureka moment for proofs
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Consecutive integers and relatively prime numbers
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Constructive Proofs Munkre's Topology Ch 1 sec. 2, ex. #1:
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Constructive Proofs Proof of Correspondence theorem
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Challenge Math Challenge - August 2020
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Indirect Proof (open) Divergent series of inverse primes
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Constructive Proofs (open) Little Fermat Proof
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Simple Induction Proving Coprime of Fermat Numbers and Corollary
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Challenge Math Challenge - July 2020
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Challenge Math Challenge - June 2020
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Challenge Math Challenge - May 2020
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Challenge Math Challenge - October 2018
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Challenge Math Challenge - April 2020
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Challenge Math Challenge - September 2019
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Challenge Math Challenge - October 2019
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Challenge Math Challenge - March 2020 (Part II)
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Challenge Math Challenge - March 2020
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Challenge Math Challenge - February 2020
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Challenge Math Challenge - January 2020
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Challenge Math Challenge - December 2019
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Challenge Math Experiment: Let's Prove Something
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Challenge Math Challenge - August 2019
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Challenge Riddles and Puzzles: Extend the following to a valid equation
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Challenge Math Challenge - November 2018
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Challenge Math Challenge - July 2019
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Challenge Math Challenge - January 2019
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Challenge Math Challenge - June 2019
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Challenge Math Challenge - February 2019
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Challenge Are You Ready for the Basic Math Challenge This August?
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Challenge Math Challenge - May 2019
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Challenge Challenge where you have to make each number from four 4s
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Challenge Math Challenge - April 2019
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Challenge Math Challenge - March 2019
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Challenge Math Challenge - December 2018
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Challenge Basic Math Challenge - September 2018
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Challenge Intermediate Math Challenge - September 2018
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Challenge Intermediate Math Challenge - August 2018
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Challenge Ready for a Summer Math Challenge?
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Challenge Intermediate Math Challenge - July 2018
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Challenge Can You Solve These Summer Math Challenges?
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Challenge Intermediate Math Challenge - June 2018
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Challenge Intermediate Math Challenge - May 2018
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Challenge Can You Solve These Math Challenges?
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Challenge Math Trick Puzzle: Amuse Your Nephew with This Trick!
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Challenge Basic Math Problem of the Week 1/02/2017
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