Dear all,

1. A quick reminder for tomorrow’s talk. Dan Freeman is speaking. 2. Please update your zoom (Go to menu on top and click Check for updates, the new version should be 5.0.1). 3. A correction: In the last sentence of the Dan’s abstract, his collaborator Mitchell Taylor’s last name was cut off. Mitchell is a grad student at Berkeley. Apologies to Mitchell! See the abstract below.

See you tomorrow!

Bunyamin

Friday May 1st 9AM CDT (e.g., Dallas, TX time). Please join us at

https://unt.zoom.us/j/512907580

Speaker: Dan Freeman, St Louis University Title: A Schauder basis for $L_2$ consisting of non-negative functions

Abstract. We will discuss what coordinate systems can be created for $L_p(\mathbb R)$ using only non-negative functions with $1\leq p<\infty$. In particular, we will describe the construction of a Schauder basis for $L_2(\mathbb R)$ consisting of only non-negative functions. We will conclude with a discussion of some related open problems. This is joint work with Alex Powell and Mitchell Taylor.