Skip to main content
Search type Search syntax
Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Code code:"if (foo != bar)"
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Saves in:saves
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
Exclude -[tag]
-apples
For more details on advanced search visit our help page
Results tagged with
Search options not deleted user 5697
7 votes
0 answers
492 views

A proposed axiom of Laver (updated)

A few months back, I posted a question asking about a proposed axiom of Laver's and I, unfortunately, left out a critical piece. Here is the full axiom: (L) Some elementary embedding $j:V_{\lambda+1 …
Everett Piper's user avatar
9 votes
1 answer
1k views

Critical points of rank-into-rank embeddings

$\DeclareMathOperator{\crit}{\operatorname{crit}}$A rank-into-rank embedding is a non-trivial elementary embedding from a rank initial segment of $V$ into itself: $j:V_\delta\prec V_\delta$. Define th …
Everett Piper's user avatar
2 votes

Can one force there to be an elementary embedding $j:V_{\lambda}\rightarrow V_{\lambda}$ for...

Given Victoria's wonderful comment, I wonder if the following small forcing example is relevant to your question. The argument is from Laver's article "Certain very large cardinals are not created in …
Everett Piper's user avatar
10 votes
1 answer
482 views

Generic Extensions and $L(V_{\lambda+1})$

Suppose $\lambda$ is a strong limit cardinal of cofinality $\omega$ and for $A$ a transitive set, define $L(A)$ in the usual fashion by setting $$L_0(A)=A;$$ $$L_{\alpha+1}(A) = L_\alpha (A)\cup \mat …
Everett Piper's user avatar
7 votes
1 answer
494 views

Elementary Embeddings and Relative Constructibility

Suppose $$j:M\prec N$$ is a non-trivial elementary embedding. Under what conditions on the sets (classes?) $M$ and $N$ (or even the critical point of $j$) does $j$ extend to an elementary embedding $$ …
Everett Piper's user avatar
5 votes
1 answer
590 views

Solovay's Theorem on Partitions of Stationary Sets and Weak Choice Principles

There is a weak choice principle called $DC_\lambda$ which holds in $L(V_{\lambda+1})$ under the assumption of a non-trivial elementary embedding $$j:L(V_{\lambda+1})\prec L(V_{\lambda+1})$$ and it is …
Everett Piper's user avatar
3 votes

Very Large Cardinal Axioms and Continuum Hypothesis

There are some candidate axioms that are beginning to surface on the internet that appear to have large cardinal characteristics and could potentially settle questions like the CH. If they are consist …
Everett Piper's user avatar
6 votes

What is the definition of a large cardinal axiom?

While I think I agree with Tim Chow and Joel Hamkins in some of their comments above regarding a single formal definition of what it is to be a large cardinal, I want to suggest that a large cardinal …
Everett Piper's user avatar