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15
Math.TechQA.Club
2024-01-11 22:49:24
127
Views
Locally $p-$integrable function on an open set that satisfies additional condition must be $0$ almost everywhere on the open set?
Published on
11 Jan 2024 - 22:49
#real-analysis
#functional-analysis
#functions
#lebesgue-integral
#alternative-proof
48
Views
Proving Existence of $\beta > 1$ for $\beta g(x) \leq f(x)$ in Continuous Functions
Published on
12 Jan 2024 - 16:58
#real-analysis
#calculus
#analysis
#solution-verification
#alternative-proof
167
Views
Solve $f'(x)=f(-x)$
Published on
13 Jan 2024 - 22:31
#solution-verification
#alternative-proof
64
Views
Alternative proof that adding an additional square root of the identity to the free group on one generator results in a non-Abelian group
Published on
27 Mar 2026 - 7:17
#group-theory
#alternative-proof
#group-actions
#free-groups
104
Views
Show by Local Class Field Theory $\mathbf Q_p$ has unique Galois ext. iso. to $(Z/2Z)^2$ if $p > 2$, and unique Galois ext. iso. to $(Z/2Z)^3$ o/w.
Published on
26 Mar 2026 - 9:41
#number-theory
#algebraic-number-theory
#alternative-proof
#class-field-theory
#local-field
79
Views
Doubt in an step in a complex problem proof.
Published on
15 Jan 2024 - 8:16
#algebra-precalculus
#complex-numbers
#proof-explanation
#real-numbers
#alternative-proof
31
Views
Geometric proof that there's only way to make a power of four out of four odd squares
Published on
01 Apr 2026 - 14:03
#alternative-proof
#quaternions
165
Views
What ways are there to define $\aleph$?
Published on
29 Mar 2026 - 20:54
#definition
#cardinals
#alternative-proof
#ordinals
83
Views
half-closed nested interval property to prove $[0,1)$ uncountable
Published on
21 Jan 2024 - 21:05
#real-analysis
#calculus
#solution-verification
#proof-writing
#alternative-proof
286
Views
Is there an elementary proof that $2^{\sqrt{2}}$ is irrational?
Published on
23 Feb 2026 - 10:16
#alternative-proof
#irrational-numbers
#rationality-testing
#algebraic-numbers
108
Views
How to find the ratio of sides of 45-45-90 triangle independently of Pythagoras theorem?
Published on
22 Jan 2024 - 18:46
#geometry
#euclidean-geometry
#triangles
#alternative-proof
63
Views
Cantor-Bendixson Theorem
Published on
26 Mar 2026 - 22:50
#analysis
#elementary-set-theory
#set-theory
#alternative-proof
#descriptive-set-theory
79
Views
How many different ways are there to choose of $n$ subsets $\{i,j\},$ each of length $2,$ from $[2n]:= \{1,2,3,\ldots, 2n \}$?
Published on
30 Mar 2026 - 20:55
#elementary-set-theory
#solution-verification
#alternative-proof
#pigeonhole-principle
516
Views
$\binom {100} 0 \binom{100}{98}+\binom{100}2 \binom{100}{96}+\cdots+\binom{100}{98} \binom{100}0$
Published on
28 Jan 2024 - 15:50
#combinatorics
#alternative-proof
286
Views
A non p-adic proof of an arithmetical fact
Published on
31 Mar 2026 - 8:44
#elementary-number-theory
#alternative-proof
#p-adic-number-theory
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