16

Questions

votes newest views recent

3

8

votes

5

answers

739

views

$\aleph_\omega$ many subsets of $\aleph_\omega$

lo.logic set-theory

may 10 at 18:22 Santi Spadaro 666●4●6

2

votes

3

answers

478

views

Is there a (standard) name for $\bar{A}\setminus A$?

gn.general-topology notation soft-question

jan 13 at 8:54 practical 21●1●2

6

votes

2

answers

280

views

How big $|Aut(M)|$ can be, given $|\partial Aut(M)|$?

lo.logic topology topological-groups automorphism-groups

nov 30 at 16:52 Ioannis Souldatos 815●2●10

4

votes

0

answers

63

views

$L_{\omega_1,\omega}$ sentence with many automorphism in $\aleph_0$ and few automorphism in $\aleph_\omega$

model-theory lo.logic

nov 19 at 20:40 Ioannis Souldatos 815●2●10

4

votes

2

answers

181

views

Is the generalized Baire space complete?

soft-question reference-request gn.general-topology descriptive-set-theory

nov 14 at 15:18 Toby Bartels 923●4●10

1

11

votes

3

answers

327

views

Disjoint stationary sets that reflect

lo.logic set-theory

nov 6 at 21:19 Todd Eisworth 1,193●3●11

1

4

votes

1

answer

235

views

Characterizing $\omega_1$-like dense linear orderings

reference-request order-theory linear-orders set-theory

aug 8 at 1:40 Joel David Hamkins 75.4k●8●187●346

1

6

votes

1

answer

300

views

GCH+ Kurepa Families

set-theory forcing large-cardinals reference-request

aug 6 at 6:21 Philipp Schlicht 243●2●5

2

votes

1

answer

184

views

Countable structures with uncountable many automorphisms

lo.logic automorphism-groups automorphisms infinitary-logic

aug 2 at 18:50 Trevor Wilson 1,506●6●14

1

4

votes

1

answer

264

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Is there a statement equivalent to a sentence admitting $(\alpha^{+n},\alpha)$?

lo.logic set-theory model-theory

may 23 12 at 22:54 David Milovich 681●3●10