Khare, Apoorva. <br/><br/>
On the sign patterns of entrywise positivity preservers in fixed dimension /  
Apoorva Khare and Terence Tao 
 - Baltimore, Maryland U.S.,   Johns Hopkins University Press,   December 2021.  
 - volume 143, pages 1863-1929. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Patterns (Mathematics).<br/>Mathematical analysis.<br/>Functions.
<br/><br/><label>Dewey Class. No.: </label>DPer 510.5 Am351 October - December 2021 v143 no. 5-6