Math Proof Training and Practice Forum

Post thread
Participate in free math proof training events and practice your proofs with expert math guides helping you step by step.
  • Sticky
Math Proof Training Camp and Practice Guidelines
Replies
0
Views
1K
  • Sticky
Challenge Solution Manuals For The Math Challenges
Replies
4
Views
6K
Bishops and permutations on chessboard
Replies
23
Views
496
Indirect Proof (open) The most basic math proof I've ever seen
Replies
9
Views
2K
Proof in number theory: the sum of all divisors of n
Replies
12
Views
456
Challenge Math Challenge Thread (October 2023)
Replies
25
Views
2K
Challenge Math Challenge - July 2023
2
Replies
69
Views
4K
Challenge Math Challenge - June 2023
3
Replies
80
Views
4K
Challenge Math Challenge - December 2021
3
Replies
93
Views
10K
Challenge Math Challenge - November 2019
2
Replies
42
Views
9K
Challenge Math Challenge - November 2021
2
Replies
42
Views
6K
Challenge Math Challenge - October 2021
2
Replies
61
Views
7K
Challenge Math Challenge - September 2021
3
Replies
100
Views
7K
Simple Induction Induction proof of Polynomial Division Theorem
Replies
10
Views
1K
I have a few questions about Formalization & Pseudo-code
Replies
19
Views
1K
Challenge Math Challenge - July 2021
3
Replies
93
Views
6K
Challenge Math Challenge - August 2021
2
Replies
46
Views
5K
How to write this set in set-builder notation?
Replies
10
Views
881
Challenge Math Challenge - June 2021
2
Replies
61
Views
6K
Proving a statement about inclusion of subspaces
Replies
18
Views
1K
Challenge Math Challenge - December 2020
2
Replies
60
Views
8K
Challenge Math Challenge - October 2020
Replies
33
Views
7K
Challenge Math Challenge - January 2021
3
Replies
86
Views
9K
Span(S) is the intersection of all subspaces of V containing S
Replies
1
Views
2K
Help with a proof regarding convergent sequence (proof by contradiction)
Replies
4
Views
1K
Challenge Math Challenge - February 2021
2
Replies
67
Views
8K
Challenge Math Challenge - May 2021
4
Replies
114
Views
6K
Showing continuous function has min or max using Cauchy limit def.
Replies
7
Views
831
Changing the Statement Combinatorial proofs & Contraposition
Replies
5
Views
815
Challenge Math Challenge - April 2021
3
Replies
102
Views
7K
Technique for proving Inclusion-Exclusion principle combinatorically
Replies
5
Views
963
Simple Induction Interesting Algebra Problem
Replies
2
Views
774
Challenge Math Challenge - March 2021
2
Replies
56
Views
7K
From the limit of the derivative, infer the behavior of the antiderivative
Replies
19
Views
992
Indirect Proof Proof verification: sequence a_n=(−1)^n does not converge
Replies
1
Views
910
Existence of isomorphism ϕ:V→V s.t. ϕ(ϕ(v))=−v for all v∈V
Replies
17
Views
1K
Challenge Math Challenge - September 2020
2
Replies
52
Views
9K
Inequalities Since ε is arbitrarily small, do the inequalities hold?
Replies
5
Views
889
Det of Triangular-like Matrix & getting stuck in Algorithmic Proof
Replies
8
Views
1K
Non Existence An argument involving well-orders
Replies
9
Views
1K
Basel Problem Integral: Solving with Calculus
Replies
6
Views
1K
Proving that a square of an odd integer is also odd
Replies
3
Views
847
Showing that real symmetric matrices are diagonalizable
Replies
2
Views
2K
Disproving a statement about whole numbers
Replies
20
Views
2K
Can I use recursion/induction to show that N <= x < N+1 for x real
Replies
10
Views
2K
Contradictory Proof of Supremum of E: Is it Circular?
Replies
8
Views
828
Stuck at proving a bounded above Subsequence
Replies
8
Views
1K
Challenge Math Challenge - November 2020
3
Replies
98
Views
11K
Difficulty with "Exists" & "Let" or "Arbitrary"
Replies
4
Views
1K
Simple Induction Help with Lemma for proof of AM-GM inequality
Replies
6
Views
1K
Sum of rational and irrational is irrational
Replies
6
Views
1K
Constructive Proofs (open) Boundaries on the roots of splitting real polynomials
Replies
2
Views
771
Changing the Statement Proving $\zeta(2)=\frac{\pi^2}{6}$ via Geometric Series & Substitutions
Replies
7
Views
942
Simple Induction Direct Proofs regarding Induction
Replies
5
Views
1K
Your favorite Eureka moment for proofs
2
Replies
37
Views
7K
Consecutive integers and relatively prime numbers
Replies
1
Views
1K
Constructive Proofs Munkre's Topology Ch 1 sec. 2, ex. #1:
Replies
1
Views
956
Constructive Proofs Proof of Correspondence theorem
Replies
1
Views
992
Challenge Math Challenge - August 2020
3
Replies
104
Views
13K
Indirect Proof (open) Divergent series of inverse primes
Replies
0
Views
885
Constructive Proofs (open) Little Fermat Proof
Replies
2
Views
849
Simple Induction Proving Coprime of Fermat Numbers and Corollary
Replies
8
Views
1K
Challenge Math Challenge - July 2020
4
Replies
137
Views
15K
Challenge Math Challenge - June 2020
5
Replies
156
Views
16K
Challenge Math Challenge - May 2020
2
Replies
61
Views
9K
Challenge Math Challenge - October 2018
3
Replies
71
Views
9K
Challenge Math Challenge - April 2020
5
Replies
150
Views
15K
Challenge Math Challenge - September 2019
2
Replies
39
Views
10K
Challenge Math Challenge - October 2019
2
Replies
43
Views
9K
Challenge Math Challenge - March 2020 (Part II)
2
Replies
51
Views
7K
Challenge Math Challenge - March 2020
3
Replies
77
Views
12K
Challenge Math Challenge - February 2020
4
Replies
107
Views
15K
Challenge Math Challenge - January 2020
2
Replies
64
Views
12K
Challenge Math Challenge - December 2019
2
Replies
48
Views
9K
Challenge Math Experiment: Let's Prove Something
2
Replies
39
Views
7K
Challenge Math Challenge - August 2019
4
Replies
121
Views
18K
Challenge Riddles and Puzzles: Extend the following to a valid equation
17
Replies
592
Views
37K
Challenge Math Challenge - November 2018
6
Replies
175
Views
20K
Challenge Math Challenge - July 2019
3
Replies
101
Views
14K
Challenge Math Challenge - January 2019
2
Replies
40
Views
14K
Challenge Math Challenge - June 2019
2
Replies
46
Views
10K
Challenge Math Challenge - February 2019
3
Replies
86
Views
19K
Challenge Are You Ready for the Basic Math Challenge This August?
2
Replies
57
Views
8K
Challenge Math Challenge - May 2019
2
Replies
48
Views
8K
Challenge Challenge where you have to make each number from four 4s
2
Replies
35
Views
69K
Challenge Math Challenge - April 2019
3
Replies
83
Views
17K
Challenge Math Challenge - March 2019
3
Replies
97
Views
18K
Challenge Math Challenge - December 2018
2
Replies
67
Views
10K
Challenge Basic Math Challenge - September 2018
2
Replies
38
Views
6K
Challenge Intermediate Math Challenge - September 2018
Replies
28
Views
5K
Challenge Intermediate Math Challenge - August 2018
Replies
20
Views
4K
Challenge Ready for a Summer Math Challenge?
2
Replies
62
Views
8K
Challenge Intermediate Math Challenge - July 2018
Replies
16
Views
5K
Challenge Can You Solve These Summer Math Challenges?
2
Replies
63
Views
9K
Challenge Intermediate Math Challenge - June 2018
2
Replies
55
Views
8K
Challenge Intermediate Math Challenge - May 2018
2
Replies
61
Views
9K
Challenge Can You Solve These Math Challenges?
3
Replies
82
Views
11K
Challenge Math Trick Puzzle: Amuse Your Nephew with This Trick!
Replies
5
Views
3K
Challenge Basic Math Problem of the Week 1/02/2017
Replies
21
Views
2K
Challenge Intermediate Math Problem of the Week 10/17/2017
Replies
3
Views
2K
Challenge Advanced Math Problem of the Week 12/20/2017
Replies
1
Views
2K
Challenge Intermediate Math Problem of the Week 12/27/2017
Replies
5
Views
2K

Hot Threads

Recent Insights

Back
Top