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15
Math.TechQA.Club
2026-03-25 04:40:09
542
Views
Proving this is a theorem of S5 in modal logic
Published on
25 Mar 2026 - 4:40
#proof-verification
#logic
#proof-explanation
#modal-logic
1k
Views
Proving the inradius (r) for an equilateral triangle
Published on
01 Jun 2019 - 19:15
#geometry
#proof-explanation
62
Views
Show that if $T$ is a Skolem theory in $L$, then $T$ is a Skolem theory in $L'$
Published on
27 Mar 2026 - 14:56
#logic
#proof-explanation
#model-theory
50
Views
Could provide some further detail about this step in a proof
Published on
25 Mar 2026 - 17:39
#logic
#proof-explanation
#propositional-calculus
#formal-proofs
35
Views
What are some examples of statement-reason format for ratios of segments?
Published on
25 Mar 2026 - 20:13
#geometry
#proof-explanation
#examples-counterexamples
#ratio
1k
Views
Prove that there exists an open set $V$ with compact closure such that $K⊆V⊆\overline V⊆ U$
Published on
01 Apr 2026 - 0:10
#general-topology
#elementary-set-theory
#proof-explanation
#compactness
172
Views
Proving the sum of the shaded areas is equal to the incircle (in an equilateral triangle).
Published on
02 Jun 2019 - 10:22
#proof-explanation
130
Views
How does $Y_n$ approach $\theta$ in probability here?
Published on
28 Mar 2026 - 18:14
#probability-theory
#statistics
#proof-explanation
#statistical-inference
105
Views
Show that there is no polynomial P(x) of degree 998 with real coefficients satisfying the equation $P(x)^2 - 1 = P(x^2 + 1)$ for all real numbers x.
Published on
02 Jun 2019 - 17:25
#real-analysis
#functions
#polynomials
#proof-explanation
200
Views
prove $ g(x) = x^{5} - x$ is surjective.
Published on
28 Mar 2026 - 7:36
#functions
#proof-verification
#proof-explanation
#alternative-proof
438
Views
Infinite Descent Principle
Published on
03 Jun 2019 - 5:09
#proof-explanation
323
Views
Please explain to me in simple terms what these circle intersections are all about.
Published on
27 Mar 2026 - 16:26
#proof-explanation
#circles
#plane-geometry
56
Views
Need help with the proposition 4.2 in R. C. Churchill's paper on Liouville's Theorem in differential algebra
Published on
06 Apr 2026 - 23:25
#proof-explanation
#differential-algebra
495
Views
Help me understand this measure theory proof(Tao)
Published on
03 Jun 2019 - 20:09
#real-analysis
#measure-theory
#proof-explanation
40
Views
Invertibility of a transformation matrix proof
Published on
04 Jun 2019 - 10:45
#linear-algebra
#matrices
#proof-verification
#proof-explanation
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