Take the 2-minute tour ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

My professor began discussing branch cuts in class today and mentioned that he did not know the origin of the term. Does anyone know the origin of the term and perhaps a source that talks about it?

share|improve this question
The use of "branch" in branch cut is the same as the use of the word "branch" in the sense of different branches of a function. A branch cut is a cut in the plane made to ensure that you can choose a single valued branch of the function at hand. So I would guess that the expression "branch of a function" came first, and that the expression "branch cut" was derived from it. –  Matt E Jun 9 '11 at 2:07
add comment

Know someone who can answer? Share a link to this question via email, Google+, Twitter, or Facebook.

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.