## Speaker:

Nam Trang

## Speaker Link:

## Institution:

University of North Texas

## Time:

Monday, January 25, 2021 - 4:00pm to 5:30pm

## Location:

Zoom

We present some ideas involved in the proof of the equiconsistency

of AD_\reals + Theta is regular and the existence of a strong,

pseudo-homogeneous ideal on P_{\omega_1}(\reals). Some variations of this

hypothesis are also shown to be equiconsistent with AD_\reals + Theta is

regular. This work is related to and partially answers a long-standing

conjecture of Woodin regarding the equiconsistency of AD_\reals + Theta is

regular and CH + the nonstationary ideal on \omega_1 is \omega_1-dense. We

put this result in a broader context of the general program of understanding

connections between canonical models of large cardinals, models of

determinacy, and strong forcing axioms (e.g. PFA, MM). This is joint work with G. Sargsyan and T. Wilson.