0
votes
2answers
123 views

Meaning of “that” in “holomorphic function in the sector S that is continuous”

I have encountered a confusing sentence in a math textbook: Suppose F is a holomorphic function in the sector S that is continuous on the closure of S. What does that mean in the above ...
2
votes
1answer
820 views

Can “who” as a relative pronoun sometimes be omitted?

Somebody once observed two things: people often omit the relative pronoun "who" or "whom" to avoid having to worry about which is grammatically correct however, in all cases where it can be omitted, ...
74
votes
9answers
4k views

When to use “that” and when to use “which”?

When is it appropriate to use that as opposed to which?