General Math Forum

Post thread
Join in expert discussion on general math topics that are not applicable to the specific categories. This includes topics are usually high school math level. Homework help is available.

Math Proof Training and Practice

146 threads
A gap in resources that should help students visualise mathematics

Math Guides, Tutorials and Articles

47 threads
Tusi couple

Math Problem of the Week

1.3K threads
Just a kinematics problem from a Russian physics olympiad

MATLAB, Maple, Mathematica, LaTeX

6.5K threads
Cone‑like layered structure in 2D FFT
  • Sticky
Problem-Solving Strategy for Dynamics Problems
  • Ackbach
  • · Replies 2 ·
Replies
2
Views
34K
  • Sticky
High School List of Online Calculators for Math, Physics, Earth and Other Curiosities
  • fresh_42
  • · Replies 0 ·
Replies
0
Views
13K
  • Sticky
Graduate What Topics Do These Math FAQs Cover?
  • Greg Bernhardt
  • · Replies 6 ·
Replies
6
Views
16K
Undergrad Meaning of division by non-whole real numbers
  • logicgate
  • · Replies 7 ·
Replies
7
Views
485
Undergrad Solving the chess game (quantum computer wise)
  • loop quantum gravity
  • · Replies 14 ·
Replies
14
Views
606
An intuition I had about infinite numbers -- Is it valid?
  • mr3000
  • · Replies 2 ·
Replies
2
Views
499
High School Having trouble understanding the incompleteness theorem
  • BadgerBadger92
  • · Replies 4 ·
Replies
4
Views
875
Insights AI Enriched Problem Solving
  • Greg Bernhardt
  • · Replies 30 ·
2
Replies
30
Views
12K
Undergrad Can anyone solve this age problem?
  • Curious Kev
  • · Replies 38 ·
2
Replies
38
Views
7K
Undergrad Descartes’ Geometry of Square Roots
  • bob012345
  • · Replies 37 ·
2
Replies
37
Views
3K
High School Why does continuity still feel weird?
  • RicoGerogi
  • · Replies 21 ·
Replies
21
Views
1K
Undergrad Limit behaviour of Fibonacci sequence
  • PeroK
  • · Replies 4 ·
Replies
4
Views
1K
High School Geometry Puzzle: Cut The Figure to Make Two Identical Parts
  • bob012345
  • · Replies 21 ·
Replies
21
Views
2K
Graduate Is my reasoning sound for challenging this exploratory analysis?
  • mattmaci
  • · Replies 5 ·
Replies
5
Views
686
High School Kilometers to Miles Numerology
  • kuruman
  • · Replies 6 ·
Replies
6
Views
1K
High School Does this equation (Einstein’s field equations in general relativity) equal 12?
  • BadgerBadger92
  • · Replies 33 ·
2
Replies
33
Views
3K
Undergrad The natural numbers and logical consequences of them
  • mr3000
  • · Replies 18 ·
Replies
18
Views
2K
Undergrad Semi-Circles Within a Circle
  • bob012345
  • · Replies 6 ·
Replies
6
Views
883
Undergrad Why should we need to re-prove theorems that have been proved already?
  • Mike_bb
  • · Replies 3 ·
Replies
3
Views
664
High School Ant on a stretchy rope puzzle
  • DaveC426913
  • · Replies 38 ·
2
Replies
38
Views
6K
Undergrad Is this proof "by contradiction" or "by contrapositive"?
  • Hill
  • · Replies 7 ·
Replies
7
Views
1K
Undergrad Infinity and 0 (null set) do not exist
  • MDH72
  • · Replies 14 ·
Replies
14
Views
1K
Undergrad A Very Gentle Approach to Thinking About Hyperspheres
  • bob012345
  • · Replies 11 ·
Replies
11
Views
2K
High School Multiplication and Division by Numerical "Trituration"
  • dom_quixote
  • · Replies 5 ·
Replies
5
Views
1K
High School Distance between points on two circles
  • LucKy
  • · Replies 3 ·
Replies
3
Views
881
High School Four Circle Problem
  • bob012345
  • · Replies 9 ·
Replies
9
Views
3K
Challenge MIT Announces the Largest Collection of Olympiad Math Problems
  • jedishrfu
  • · Replies 2 ·
Replies
2
Views
2K
Graduate A neat fact regarding Cauchy problems for infinite systems
  • wrobel
  • · Replies 3 ·
Replies
3
Views
1K
High School Example of a model for a function
  • Ssnow
  • · Replies 6 ·
Replies
6
Views
1K
High School This One Moved Me
  • bhobba
  • · Replies 12 ·
Replies
12
Views
2K
High School Abel Prize awarded, 2026, to Gerd Faltings
  • WWGD
  • · Replies 1 ·
Replies
1
Views
2K
Graduate About a natural extension of Collatz conjecture
  • coquelicot
  • · Replies 3 ·
Replies
3
Views
2K
High School Potato paradox
  • Gavran
  • · Replies 28 ·
Replies
28
Views
5K
High School Three Squares Problem
  • bob012345
  • · Replies 10 ·
Replies
10
Views
3K
Undergrad Solving ##a^b## and ##b^a## via the Lambert Function
  • jedishrfu
  • · Replies 5 ·
Replies
5
Views
1K
Undergrad Comparing ##a^b## and ##b^a##
  • PeroK
  • · Replies 19 ·
Replies
19
Views
2K
Undergrad Three Circle Problem
  • bob012345
  • · Replies 14 ·
Replies
14
Views
4K
Graduate A global version of the implicit function theorem
  • wrobel
  • · Replies 1 ·
Replies
1
Views
2K
Geometric Game: Fun With Matches (Safe!)
  • bob012345
  • · Replies 40 ·
2
Replies
40
Views
5K
Undergrad What is the most impactful way of introducing Laplace transforms?
  • matqkks
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Computable sequence of rationals with a noncomputable limit
  • Hill
  • · Replies 8 ·
Replies
8
Views
2K
High School The parallel axiom, Stillwell's "Reverse Mathematics"
  • Hill
  • · Replies 16 ·
Replies
16
Views
3K
Graduate Open problems and suggestions of great mathematical journals
  • V9999
  • · Replies 10 ·
Replies
10
Views
4K
Undergrad Find the Number of Triangles
  • bob012345
  • · Replies 33 ·
2
Replies
33
Views
7K
High School Area of Overlapping Squares
  • bob012345
  • · Replies 10 ·
Replies
10
Views
6K
Insights What Exactly is Dirac’s Delta Function? - Insight
  • Greg Bernhardt
  • · Replies 33 ·
2
Replies
33
Views
15K
Undergrad Trigonometry problem of interest
  • Charles Link
  • · Replies 81 ·
3
Replies
81
Views
13K
High School More similar triangle problems
  • DaveC426913
  • · Replies 23 ·
Replies
23
Views
3K
Undergrad Polynomial vs. Exponential time
  • senmeis
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad There are only finitely many primes
  • martinbn
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Midpoint(s) of the unbounded number line
  • tomwilliam
  • · Replies 15 ·
Replies
15
Views
2K
High School Arithmetic and our place value system
  • mark2142
  • · Replies 6 ·
Replies
6
Views
2K
High School Can Six Pencils Be Arranged to Each Touch the Other Five?
  • bob012345
  • · Replies 30 ·
2
Replies
30
Views
5K
Undergrad Video on imaginary numbers and some queries
  • PainterGuy
  • · Replies 3 ·
Replies
3
Views
3K
High School Imaginary Pythagoras
  • DaveC426913
  • · Replies 13 ·
Replies
13
Views
2K
High School Happy Pythagorean Day!
  • Astronuc
  • · Replies 8 ·
Replies
8
Views
2K
Insights Fermat's Last Theorem
  • fresh_42
  • · Replies 105 ·
4
Replies
105
Views
13K
Undergrad Useless continued fraction for 1
  • jostpuur
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Proving Newton's forward difference interpolation formula
  • PLAGUE
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Geometry problem of interest with a 3-4-5 triangle
  • Charles Link
  • · Replies 59 ·
2
Replies
59
Views
233K
High School What could prove this wrong? I'm having a dispute with friends
  • ducknumerouno
  • · Replies 94 ·
4
Replies
94
Views
8K
Graduate RIP Yvonne Choquet-Bruhat (1923-2025)
  • robphy
  • · Replies 4 ·
Replies
4
Views
2K
High School Videos of 4D Die and Sphere
  • Hornbein
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Article about 17 year-old math talent
  • jasonRF
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad The Mathematical Wizard, A House's Windows, And Solar Flux
  • Young101
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Lectures on integral invariants and Hamiltonian equations
  • wrobel
  • · Replies 16 ·
Replies
16
Views
2K
Insights Fixing Things Which Can Go Wrong With Complex Numbers
  • PAllen
  • · Replies 7 ·
Replies
7
Views
8K
Graduate Is this Recursive Pattern in the Collatz Sequence Known?
  • MrHellmet
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Why fixed point iteration of ##x^3 = 1-x^2## doesn't converge when ##x_0= 0##
  • PLAGUE
  • · Replies 16 ·
Replies
16
Views
3K
High School Excel: converting a 3-ish week count into a monthly count
  • DaveC426913
  • · Replies 15 ·
Replies
15
Views
3K
High School Geometry Puzzle with 20 points in a cross pattern
  • bob012345
  • · Replies 31 ·
2
Replies
31
Views
7K
High School What is the deepest/most impactful statement that you have ever seen?
  • spaceWizard9000
  • · Replies 46 ·
2
Replies
46
Views
5K
Undergrad Modeled PF Trophies
  • AlexB23
  • · Replies 14 ·
Replies
14
Views
2K
High School Solving equations but getting an identity - what mistakes were made?
  • farfromdaijoubu
  • · Replies 4 ·
Replies
4
Views
3K
High School About a definition: What is the number of terms of a polynomial P(x)?
  • littlemathquark
  • · Replies 48 ·
2
Replies
48
Views
7K
High School "Land capture" graph paper game
  • DaveC426913
  • · Replies 13 ·
Replies
13
Views
3K
High School In a triangle, is the angle between the points of contact of the inscribed circle with the sides 120 degrees?
  • Antoha1
  • · Replies 2 ·
Replies
2
Views
3K
High School How do you multiply fractions again? My brain just froze 😅
  • goodcomfort
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad How to convince someone that an event repeating an infinite number of times does not guarantee every outcome?
  • sairoof
  • · Replies 23 ·
Replies
23
Views
4K
Undergrad Can Angular Velocity Accurately Control Ragdoll Limbs in Game Physics?
  • MadAce
  • · Replies 6 ·
Replies
6
Views
5K
Undergrad ##x\lt y \lt z## positive integer numbers and if ##\dfrac 1x+\dfrac 1y+\dfrac 1z=\dfrac 13##
  • littlemathquark
  • · Replies 6 ·
Replies
6
Views
3K
High School How Many Straight Lines to Connect an N by M Array of Points in a Closed Loop?
  • bob012345
  • · Replies 25 ·
Replies
25
Views
5K
High School The Pitcher's Mound
  • Hornbein
  • · Replies 10 ·
Replies
10
Views
3K
High School Is It Better to Run or Walk in the Rain?
  • Pikkugnome
  • · Replies 46 ·
2
Replies
46
Views
11K
Undergrad How were "e" and "pi" found?
  • mayflowers
  • · Replies 26 ·
Replies
26
Views
5K
Undergrad How was this substitution possible?
  • InDireNeedOfHelp
  • · Replies 5 ·
Replies
5
Views
2K
High School Are there English names for these formulas? (binomial formulas)
  • Trysse
  • · Replies 42 ·
2
Replies
42
Views
7K
High School 1lb cube of 99% pure copper?
  • Coulin
  • · Replies 10 ·
Replies
10
Views
4K
High School Which conditions should I check to see if a quadrilateral is a square?
  • murshid_islam
  • · Replies 17 ·
Replies
17
Views
4K
Graduate !?Puzzle?! -Possible Clue- Split the Difference
  • Andrew153
  • · Replies 12 ·
Replies
12
Views
2K
High School How is it that law of sines does not work in this exercise?
  • mcastillo356
  • · Replies 70 ·
3
Replies
70
Views
8K
High School How to prove this for every Arithmetic Progression?
  • tellmesomething
  • · Replies 12 ·
Replies
12
Views
3K
High School Given an equation, find the value of this expression
  • littlemathquark
  • · Replies 17 ·
Replies
17
Views
3K
Happy Pi Day!
  • diogenesNY
  • · Replies 4 ·
Replies
4
Views
3K
High School Understanding the Pythagorean Theorem
  • wrong thunder
  • · Replies 38 ·
2
Replies
38
Views
8K
Undergrad Billard balls on table
  • littlemathquark
  • · Replies 10 ·
Replies
10
Views
3K
Undergrad How is the Euclid Math Contest marked?
  • Euthenia
  • · Replies 2 ·
Replies
2
Views
4K
High School Estimating ##\pi## with darts
  • jack action
  • · Replies 15 ·
Replies
15
Views
3K
Undergrad Exploring Interesting Mathematical Puzzles
  • wrong thunder
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Can I add any number of zeros to 0.00 ... 1?
  • nmz
  • · Replies 30 ·
2
Replies
30
Views
6K
High School Sine Multiplication
  • Vilhjalmur Haldorson
  • · Replies 5 ·
Replies
5
Views
3K
(Seemingly) Random Sequences
  • Monoxdifly
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad Open problems in continued fractions
  • TeethWhitener
  • · Replies 6 ·
Replies
6
Views
5K