Question

An infinite cardinal agrees with all its well-orders on sets of full size.

score 208 · Answer 1 · 2012-11-06 02:23:31

208

Views

An infinite cardinal agrees with all its well-orders on sets of full size.

Published on 06 Nov 2012 - 2:23

score 137 · Answer 2 · 2012-11-17 18:12:42

137

Views

Equivalent definition of a closed set.

Published on 17 Nov 2012 - 18:12

score 357 · Answer 3 · 2012-11-18 21:27:55

357

Views

Question about cofinality of an ordinal

Published on 18 Nov 2012 - 21:27

score 1.8k · Answer 4 · 2012-11-19 17:00:21

1.8k

Views

Ordinal non-commutative addition example

Published on 19 Nov 2012 - 17:00

score 1.3k · Answer 5 · 2012-11-21 22:30:12

1.3k

Views

Curious facts about ordinal numbers

Published on 21 Nov 2012 - 22:30

score 237 · Answer 6 · 2012-11-25 17:43:50

237

Views

The product of the finite non-zero ordinals, and the product of the finite non-zero cardinals.

Published on 25 Nov 2012 - 17:43

score 917 · Answer 7 · 2012-11-25 18:28:48

917

Views

Decreasing sequence of ordinals must stabilize

Published on 25 Nov 2012 - 18:28

score 565 · Answer 8 · 2012-11-25 18:40:09

565

Views

How to show the following equality of ordinal exponentiation: $n^{\omega^\omega}=\omega^{\omega^\omega}$?

Published on 25 Nov 2012 - 18:40

score 283 · Answer 9 · 2012-11-30 12:45:24

283

Views

Lower Bound of countable order-types of linearly ordered sets

Published on 30 Nov 2012 - 12:45

score 145 · Answer 10 · 2012-11-30 15:35:46

145

Views

Is $\omega_{\alpha}$ sequentially compact?

Published on 30 Nov 2012 - 15:35

score 375 · Answer 11 · 2012-12-05 12:38:59

375

Views

Proof of "ordinal if and only if is Mostowski collapse"

Published on 05 Dec 2012 - 12:38

score 174 · Answer 12 · 2012-12-05 12:45:18

174

Views

Proof that isomorphic strict partial orders have same Mostowski collapse

Published on 05 Dec 2012 - 12:45

score 77 · Answer 13 · 2012-12-06 10:30:47

77

Views

Proof of every cofinal subclass of $\mathbf{ON}$ is proper

Published on 06 Dec 2012 - 10:30

score 118 · Answer 14 · 2012-12-06 16:52:03

118

Views

Existence of a $\sup$ and local compactness in the countable ordinals $\Omega$

Published on 06 Dec 2012 - 16:52

score 115 · Answer 15 · 2012-12-08 21:01:28

115

Views

Problem 1.45 (Boolean-valued ordinals) (J.Bell, boolean-valued models and indipendence proof, 3rd edition)

Published on 08 Dec 2012 - 21:01

List Question

An infinite cardinal agrees with all its well-orders on sets of full size.

Equivalent definition of a closed set.

Question about cofinality of an ordinal

Ordinal non-commutative addition example

Curious facts about ordinal numbers

The product of the finite non-zero ordinals, and the product of the finite non-zero cardinals.

Decreasing sequence of ordinals must stabilize

How to show the following equality of ordinal exponentiation: $n^{\omega^\omega}=\omega^{\omega^\omega}$?

Lower Bound of countable order-types of linearly ordered sets

Is $\omega_{\alpha}$ sequentially compact?

Proof of "ordinal if and only if is Mostowski collapse"

Proof that isomorphic strict partial orders have same Mostowski collapse

Proof of every cofinal subclass of $\mathbf{ON}$ is proper

Existence of a $\sup$ and local compactness in the countable ordinals $\Omega$

Problem 1.45 (Boolean-valued ordinals) (J.Bell, boolean-valued models and indipendence proof, 3rd edition)

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