Question

Proving $A - B \subset A - (B - A)$

score 97 · Answer 1 · 2026-04-26 08:36:02

97

Views

Proving $A - B \subset A - (B - A)$

Published on 26 Apr 2026 - 8:36

score 139 · Answer 2 · 2026-04-17 13:02:09

139

Views

Let $V(\Bbb K),\dim V=n$ and $B=\{v_1,\ldots,v_n\}$ a base of $V$. Prove any $S\subseteq B, S\ne\emptyset$ is linearly independent.

Published on 17 Apr 2026 - 13:02

score 50 · Answer 3 · 2026-04-15 19:06:15

50

Views

Proving $A \cap (B - C) = (A \cap B) - (A \cap C)$

Published on 15 Apr 2026 - 19:06

score 236 · Answer 4 · 2026-04-16 10:08:19

236

Views

Question about product of generating functions in a proof that for positive integer $n$, $\sum_{k=0}^n(-1)^k\binom nk\binom{2n-k}n=1$.

Published on 16 Apr 2026 - 10:08

score 103 · Answer 5 · 2026-04-15 22:13:37

103

Views

How to prove $\int_0^\infty\int_0^\infty e^{-x^2 -y^2}dxdy= (\int_0^\infty e^{-x^2}dx)(\int_0^\infty e^{-y^2}dy)$?

Published on 15 Apr 2026 - 22:13

score 34 · Answer 6 · 2026-04-14 23:39:12

34

Views

Proving $(A \cup B) - (A \cup C) \subset A \cup (B - C)$

Published on 14 Apr 2026 - 23:39

score 150 · Answer 7 · 2026-04-14 08:20:36

150

Views

Help in understand some steps of the proof of the Rellich-Kondrachov theorem for compact Riemannian manifolds in Thierry Aubin's book

Published on 14 Apr 2026 - 8:20

score 64 · Answer 8 · 2026-04-11 00:25:43

64

Views

Finding a matrix $A$'s eigenvalues from its square $A^2$'s eigenvalues

Published on 11 Apr 2026 - 0:25

score 600 · Answer 9 · 2026-04-24 06:34:07

600

Views

Proof verification: find all positive integers $a$ and $b$ such that $a^b=b^a$.

Published on 24 Apr 2026 - 6:34

score 151 · Answer 10 · 2026-04-11 12:38:45

151

Views

Prove that every measure space has a completion.

Published on 11 Apr 2026 - 12:38

score 158 · Answer 11 · 2026-04-12 00:37:51

158

Views

Double Induction on Ramsey's Theorem

Published on 12 Apr 2026 - 0:37

score 46 · Answer 12 · 2026-04-09 12:12:49

46

Views

understanding a statement in the proof of a retract of a contractible space is contractible.

Published on 09 Apr 2026 - 12:12

score 148 · Answer 13 · 2026-04-24 09:33:32

148

Views

Why does $\frac{|\sin\theta|}{2}<\frac{|\theta|}{2}<\frac{|\tan\theta|}{2}$ not imply that $1>\lim_{\theta\to 0}\frac{\sin\theta}{\theta}>1$?

Published on 24 Apr 2026 - 9:33

score 73 · Answer 14 · 2026-04-16 03:04:32

73

Views

Determining $(A \times B) \cup (C \times D) \stackrel{?}{=} (A \cup C) \times (B \cup D)$

Published on 16 Apr 2026 - 3:04

score 61 · Answer 15 · 2026-04-16 02:52:25

61

Views

Proving intersection of empty set is the set of all sets

Published on 16 Apr 2026 - 2:52

List Question

Proving $A - B \subset A - (B - A)$

Let $V(\Bbb K),\dim V=n$ and $B=\{v_1,\ldots,v_n\}$ a base of $V$. Prove any $S\subseteq B, S\ne\emptyset$ is linearly independent.

Proving $A \cap (B - C) = (A \cap B) - (A \cap C)$

Question about product of generating functions in a proof that for positive integer $n$, $\sum_{k=0}^n(-1)^k\binom nk\binom{2n-k}n=1$.

How to prove $\int_0^\infty\int_0^\infty e^{-x^2 -y^2}dxdy= (\int_0^\infty e^{-x^2}dx)(\int_0^\infty e^{-y^2}dy)$?

Proving $(A \cup B) - (A \cup C) \subset A \cup (B - C)$

Help in understand some steps of the proof of the Rellich-Kondrachov theorem for compact Riemannian manifolds in Thierry Aubin's book

Finding a matrix $A$'s eigenvalues from its square $A^2$'s eigenvalues

Proof verification: find all positive integers $a$ and $b$ such that $a^b=b^a$.

Prove that every measure space has a completion.

Double Induction on Ramsey's Theorem

understanding a statement in the proof of a retract of a contractible space is contractible.

Why does $\frac{|\sin\theta|}{2}<\frac{|\theta|}{2}<\frac{|\tan\theta|}{2}$ not imply that $1>\lim_{\theta\to 0}\frac{\sin\theta}{\theta}>1$?

Determining $(A \times B) \cup (C \times D) \stackrel{?}{=} (A \cup C) \times (B \cup D)$

Proving intersection of empty set is the set of all sets

Trending Questions

Popular # Hahtags

Popular Questions