Question

How do Hrbacek and Jech derive the class function $F$ in Theorem 4.12 from Theorem 4.11?

score 126 · Answer 1 · 2026-04-11 23:39:39

126

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How do Hrbacek and Jech derive the class function $F$ in Theorem 4.12 from Theorem 4.11?

Published on 11 Apr 2026 - 23:39

score 230 · Answer 2 · 2026-03-31 05:54:42

230

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Is there a $\sigma$-complete homomorphism of $\sigma$-algebras that is not generated by a function on underlying sets?

Published on 31 Mar 2026 - 5:54

score 132 · Answer 3 · 2026-04-14 07:00:25

132

Views

Should measurable cardinals be regular?

Published on 14 Apr 2026 - 7:00

score 211 · Answer 4 · 2026-04-10 19:20:49

211

Views

Statement that implies axiom of choice

Published on 10 Apr 2026 - 19:20

score 132 · Answer 5 · 2026-04-23 16:02:43

132

Views

Is it possible to prove Regularity with Transfinite Induction only?

Published on 23 Apr 2026 - 16:02

score 109 · Answer 6 · 2026-04-13 20:13:38

109

Views

Is there a bijection between $\Bbb{R}$ and $\Bbb{R} / \Bbb{Q}$?

Published on 13 Apr 2026 - 20:13

score 122 · Answer 7 · 2026-04-17 09:29:27

122

Views

Is $(ω^ω)^ω$ equal to $ω^{(ω^2)}$?

Published on 17 Apr 2026 - 9:29

score 156 · Answer 8 · 2026-04-11 11:15:57

156

Views

Function for determining the Arity of an $n$-tuple

Published on 11 Apr 2026 - 11:15

score 89 · Answer 9 · 2026-04-14 20:45:15

89

Views

Measurable cardinals admit homogeneous set

Published on 14 Apr 2026 - 20:45

score 83 · Answer 10 · 2026-04-15 09:33:44

83

Views

Create a well ordering for functions "being $0$ near limits"

Published on 15 Apr 2026 - 9:33

score 366 · Answer 11 · 2026-04-19 23:01:06

366

Views

Is ordinal multiplication commutative?

Published on 19 Apr 2026 - 23:01

score 4.3k · Answer 12 · 2026-04-15 13:19:26

4.3k

Views

Why do we use von Neumann ordinals and not Zermelo ordinals?

Published on 15 Apr 2026 - 13:19

score 2.4k · Answer 13 · 2026-04-11 00:09:26

2.4k

Views

Where is the mistake in this "proof" of the inconsistency of ZFC?

Published on 11 Apr 2026 - 0:09

score 159 · Answer 14 · 2026-04-09 20:55:31

159

Views

About $\in$-Recursion and Mostowski Collapse

Published on 09 Apr 2026 - 20:55

score 119 · Answer 15 · 2026-04-12 17:01:34

119

Views

Can we have a cardinal exponent of any number?

Published on 12 Apr 2026 - 17:01

List Question

How do Hrbacek and Jech derive the class function $F$ in Theorem 4.12 from Theorem 4.11?

Is there a $\sigma$-complete homomorphism of $\sigma$-algebras that is not generated by a function on underlying sets?

Should measurable cardinals be regular?

Statement that implies axiom of choice

Is it possible to prove Regularity with Transfinite Induction only?

Is there a bijection between $\Bbb{R}$ and $\Bbb{R} / \Bbb{Q}$?

Is $(ω^ω)^ω$ equal to $ω^{(ω^2)}$?

Function for determining the Arity of an $n$-tuple

Measurable cardinals admit homogeneous set

Create a well ordering for functions "being $0$ near limits"

Is ordinal multiplication commutative?

Why do we use von Neumann ordinals and not Zermelo ordinals?

Where is the mistake in this "proof" of the inconsistency of ZFC?

About $\in$-Recursion and Mostowski Collapse

Can we have a cardinal exponent of any number?

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