User Ur Ya'ar - Mathematics Stack Exchange

Ur Ya'ar

Member for 10 years, 9 months
Last seen more than a week ago

Jerusalem, ישראל

6 Answers

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6 votes

Accepted

If V=L implies the axiom of choice, why can't we construct the things that depend on the axiom of choice?

answered Mar 1, 2018 at 14:17

3 votes

($\lozenge$) There exists Suslin trees such that their product is Suslin too.

answered Oct 15, 2015 at 9:42

2 votes

Understanding sets added by a forcing notion

answered Apr 3, 2016 at 21:29

1 vote

What is the Galois group of $x^4 +5$ over the rationals?

answered Jul 29, 2016 at 8:13

1 vote

Using Zorn's lemma show that $\mathbb R^+$ is the disjoint union of two sets closed under addition.

answered Jul 10, 2018 at 9:40

0 votes

Simplest set that requires Replacement but cannot be achieved using Power-Set

answered Apr 15, 2018 at 11:08