Talk:Quadric (algebraic geometry)

What is the definition of "isomorphic"?
The article would benefit from defining the sense in which the word "isomorphic" is used here, for example, in the statement that a smooth quadric curve is "isomorphic" to P1. 2601:200:C000:1A0:341D:94F5:70CE:45EA (talk) 18:02, 7 April 2021 (UTC)