Question

Is this definition of "sequentially compact" ok? ("Introduction to Set Theory and Topology" (in Japanese) by Kazuo Matsuzaka.) Need to modify it?

score 40 · Answer 1 · 2026-04-11 19:29:55

Is this definition of "sequentially compact" ok? ("Introduction to Set Theory and Topology" (in Japanese) by Kazuo Matsuzaka.) Need to modify it?

score 30 · Answer 2 · 2026-04-15 12:49:47

30

Views

Does $X_t = M_t+V_t$ have to hold everywhere in the definition of a semi-martingale?

Published on 15 Apr 2026 - 12:49

score 67 · Answer 3 · 2026-04-14 00:40:53

67

Views

What does it mean for a graph to not be symmetric?

Published on 14 Apr 2026 - 0:40

score 94 · Answer 4 · 2026-04-09 05:02:15

94

Views

What is an $E-$ invariant set in this context?

Published on 09 Apr 2026 - 5:02

score 92 · Answer 5 · 2026-04-13 04:39:39

92

Views

Definition of degree of Frobenius of abelian variety and its dual

Published on 13 Apr 2026 - 4:39

score 56 · Answer 6 · 2026-04-14 03:51:11

56

Views

Axioms of probability with finite (rather than countable) additivity

Published on 14 Apr 2026 - 3:51

score 176 · Answer 7 · 2026-04-14 04:07:08

176

Views

meaning of "pullback along" in the definition of pullback in category theory

Published on 14 Apr 2026 - 4:07

score 54 · Answer 8 · 2026-04-17 00:36:37

54

Views

Questions about how to draw compositional arrow diagram in the axiom for groups and also about angle bracket diagram.

Published on 17 Apr 2026 - 0:36

score 299 · Answer 9 · 2026-04-15 05:50:05

299

Views

What is the exact meaning of "only" in "only if"?

Published on 15 Apr 2026 - 5:50

score 169 · Answer 10 · 2026-04-09 11:40:35

169

Views

What is a Linear Transformation?

Published on 09 Apr 2026 - 11:40

score 212 · Answer 11 · 2026-04-14 17:06:47

212

Views

Why is the Axiom of Regularity preferred over the Axiom (schema) of Induction, or the claim that no downward infinite membership chain exists?

Published on 14 Apr 2026 - 17:06

score 68 · Answer 12 · 2026-04-10 06:01:35

68

Views

What is a $\{2,3\}$-group?

Published on 10 Apr 2026 - 6:01

score 211 · Answer 13 · 2026-04-09 02:53:35

211

Views

Can we rephrase Epsilon-delta definition?

Published on 09 Apr 2026 - 2:53

score 108 · Answer 14 · 2026-04-09 07:36:31

108

Views

Is "in lowest terms" necessary in this definition of rational exponents?

Published on 09 Apr 2026 - 7:36

score 59 · Answer 15 · 2026-04-13 18:23:36

59

Views

Can we define an oriented angular distance or arc measure?

Published on 13 Apr 2026 - 18:23

List Question

Is this definition of "sequentially compact" ok? ("Introduction to Set Theory and Topology" (in Japanese) by Kazuo Matsuzaka.) Need to modify it?

Does $X_t = M_t+V_t$ have to hold everywhere in the definition of a semi-martingale?

What does it mean for a graph to not be symmetric?

What is an $E-$ invariant set in this context?

Definition of degree of Frobenius of abelian variety and its dual

Axioms of probability with finite (rather than countable) additivity

meaning of "pullback along" in the definition of pullback in category theory

Questions about how to draw compositional arrow diagram in the axiom for groups and also about angle bracket diagram.

What is the exact meaning of "only" in "only if"?

What is a Linear Transformation?

Why is the Axiom of Regularity preferred over the Axiom (schema) of Induction, or the claim that no downward infinite membership chain exists?

What is a $\{2,3\}$-group?

Can we rephrase Epsilon-delta definition?

Is "in lowest terms" necessary in this definition of rational exponents?

Can we define an oriented angular distance or arc measure?

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