Question

Understanding why $T(X) = Y$ in a proof.

score 45 · Answer 1 · 2026-04-10 08:13:35

45

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Understanding why $T(X) = Y$ in a proof.

Published on 10 Apr 2026 - 8:13

score 209 · Answer 2 · 2026-04-14 14:01:44

209

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Why can I replace this direct sum isomorphism with an equality?

Published on 14 Apr 2026 - 14:01

score 111 · Answer 3 · 2026-03-27 22:20:11

111

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Need help understanding a proof on sets of divergence

Published on 27 Mar 2026 - 22:20

score 337 · Answer 4 · 2026-04-16 17:13:50

337

Views

Prove that every positive integer can be expressed as a product of odd number and power of $2$.

Published on 16 Apr 2026 - 17:13

score 219 · Answer 5 · 2026-04-16 09:24:03

Let $R$ be a relation on $\mathbb{N}$ defined by $(m, n) \in R$ if $m \mid (2n)$ or $n \mid (2m)$. Is $R$ is an equivalence relation on $\mathbb{N}$.

score 503 · Answer 6 · 2026-04-12 04:10:46

503

Views

How do Chebyshev inequality and Weak Law of Large Number translate into this?

Published on 12 Apr 2026 - 4:10

score 159 · Answer 7 · 2026-04-16 20:58:31

159

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Find all $f: \mathbb{N} \rightarrow \mathbb{N}$ which satisfy $ f(m-n+f(n))=f(m)+f(n) $

Published on 16 Apr 2026 - 20:58

score 70 · Answer 8 · 2026-04-12 12:21:12

70

Views

Understanding why a binary operator is associative. ( On a property of "fractional part of a sum" operation)

Published on 12 Apr 2026 - 12:21

score 361 · Answer 9 · 2026-04-11 23:54:36

361

Views

Understanding proof regarding uniqueness of power series representation

Published on 11 Apr 2026 - 23:54

score 49 · Answer 10 · 2026-04-15 09:37:45

49

Views

Theorem 1.1 Part 2 Lang's Complex Analysis proof explanation

Published on 15 Apr 2026 - 9:37

score 63 · Answer 11 · 2026-04-14 17:02:42

63

Views

If $r$ is the remainder of dividing the number $17*2^{635}$ by $33$, then $8$ divides $r$

Published on 14 Apr 2026 - 17:02

score 55 · Answer 12 · 2026-04-15 21:25:40

55

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Given three discrete random variables A,B,C, does P(A)P(C) = P(B)P(C) imply P(A)=P(B)?

Published on 15 Apr 2026 - 21:25

score 102 · Answer 13 · 2026-04-17 14:36:33

102

Views

Euclid's Elements Book 1 Proposition 24

Published on 17 Apr 2026 - 14:36

score 351 · Answer 14 · 2026-04-08 22:49:12

351

Views

Proof of expected loss in linear regression

Published on 08 Apr 2026 - 22:49

score 222 · Answer 15 · 2026-04-17 13:52:35

222

Views

Find all functions $f: \mathbb{N} \rightarrow \mathbb{N}$ which satisfy $ f\left(m^{2}+m n\right)=f(m)^{2}+f(m) f(n) $

Published on 17 Apr 2026 - 13:52

List Question

Understanding why $T(X) = Y$ in a proof.

Why can I replace this direct sum isomorphism with an equality?

Need help understanding a proof on sets of divergence

Prove that every positive integer can be expressed as a product of odd number and power of $2$.

Let $R$ be a relation on $\mathbb{N}$ defined by $(m, n) \in R$ if $m \mid (2n)$ or $n \mid (2m)$. Is $R$ is an equivalence relation on $\mathbb{N}$.

How do Chebyshev inequality and Weak Law of Large Number translate into this?

Find all $f: \mathbb{N} \rightarrow \mathbb{N}$ which satisfy $ f(m-n+f(n))=f(m)+f(n) $

Understanding why a binary operator is associative. ( On a property of "fractional part of a sum" operation)

Understanding proof regarding uniqueness of power series representation

Theorem 1.1 Part 2 Lang's Complex Analysis proof explanation

If $r$ is the remainder of dividing the number $17*2^{635}$ by $33$, then $8$ divides $r$

Given three discrete random variables A,B,C, does P(A)P(C) = P(B)P(C) imply P(A)=P(B)?

Euclid's Elements Book 1 Proposition 24

Proof of expected loss in linear regression

Find all functions $f: \mathbb{N} \rightarrow \mathbb{N}$ which satisfy $ f\left(m^{2}+m n\right)=f(m)^{2}+f(m) f(n) $

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