Question

Aronszajn tree for infinite singular cardinal

score 120 · Answer 1 · 2019-03-31 16:41:12

120

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Aronszajn tree for infinite singular cardinal

Published on 31 Mar 2019 - 16:41

score 58 · Answer 2 · 2026-03-26 09:50:04

58

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What is the cardinality of $A=\{f\colon \omega_n \to \omega_m | |\operatorname{Supp}(f)|=\aleph_k \quad k<n\}?$

Published on 26 Mar 2026 - 9:50

score 58 · Answer 3 · 2026-03-25 12:55:20

58

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to show cardinality in separable Hilbert space setting

Published on 25 Mar 2026 - 12:55

score 111 · Answer 4 · 2019-04-08 22:40:07

111

Views

Cardinality of an arbitrary interval of real numbers

Published on 08 Apr 2019 - 22:40

score 139 · Answer 5 · 2019-04-08 23:10:46

139

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Cardinality of partitions of a number

Published on 08 Apr 2019 - 23:10

score 312 · Answer 6 · 2019-04-08 23:35:20

312

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Countability of decimal representations of real numbers

Published on 08 Apr 2019 - 23:35

score 61 · Answer 7 · 2019-04-09 01:43:09

61

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Finiteness of sets

Published on 09 Apr 2019 - 1:43

score 504 · Answer 8 · 2019-04-09 08:14:30

504

Views

The cardinality of all equivalence relations over $\mathbb{N}$

Published on 09 Apr 2019 - 8:14

score 144 · Answer 9 · 2026-03-25 15:41:22

144

Views

How to fill a rectangle with smaller specific rectangles that have cardinal information about their adjacent neighbours

Published on 25 Mar 2026 - 15:41

score 537 · Answer 10 · 2026-03-25 23:38:11

537

Views

Indexing of uncountable sets and uncountable collections of sets, uncountable intersections containing a point

Published on 25 Mar 2026 - 23:38

score 424 · Answer 11 · 2026-03-26 12:54:02

424

Views

Are there $2^{\aleph_{0} }$ sets of natural numbers such that each two have finite intersection

Published on 26 Mar 2026 - 12:54

score 266 · Answer 12 · 2019-04-13 15:07:16

266

Views

Proving the sum of two finite cardinal numbers is finite

Published on 13 Apr 2019 - 15:07

score 39 · Answer 13 · 2019-04-14 09:19:39

39

Views

For cardinals $a,b,b'$, if $a\ge 2$ and $b<b'$, then $a^b <a^{b'}$

Published on 14 Apr 2019 - 9:19

score 40 · Answer 14 · 2019-04-15 14:48:12

40

Views

Calculate cardinal number of given A set

Published on 15 Apr 2019 - 14:48

score 57 · Answer 15 · 2019-04-15 15:03:57

Counterexample for $\prod_{i<\nu} \kappa_i=(\sup_{i<\nu}\kappa_i)^{\nu}$ when $\kappa_i$ is not an increasing $\nu$-sequence of cardinals

List Question

Aronszajn tree for infinite singular cardinal

What is the cardinality of $A=\{f\colon \omega_n \to \omega_m | |\operatorname{Supp}(f)|=\aleph_k \quad k<n\}?$

to show cardinality in separable Hilbert space setting

Cardinality of an arbitrary interval of real numbers

Cardinality of partitions of a number

Countability of decimal representations of real numbers

Finiteness of sets

The cardinality of all equivalence relations over $\mathbb{N}$

How to fill a rectangle with smaller specific rectangles that have cardinal information about their adjacent neighbours

Indexing of uncountable sets and uncountable collections of sets, uncountable intersections containing a point

Are there $2^{\aleph_{0} }$ sets of natural numbers such that each two have finite intersection

Proving the sum of two finite cardinal numbers is finite

For cardinals $a,b,b'$, if $a\ge 2$ and $b<b'$, then $a^b <a^{b'}$

Calculate cardinal number of given A set

Counterexample for $\prod_{i<\nu} \kappa_i=(\sup_{i<\nu}\kappa_i)^{\nu}$ when $\kappa_i$ is not an increasing $\nu$-sequence of cardinals

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