# Mathematics necessary for signal processing

What is the mathematics needed to delve in signal processing?

I don't know if it correct to dig toward purism downwards or stay at the applied level. Specifically, in complex analysis I find the $\varepsilon-\delta$ definition and limits.

I don't know whether am going to use them for next concepts in the book or not. I found that the word neighborhood has specific meanings in topology and analysis. do I need some pure math?

• Welcome to the site! You asked in quite rapid succession several related questions. It might be better to wait a bit longer for answers and feedback before asking a new question. If you want to expand or clarfiy a question you can edit them. – quid Oct 8 '14 at 21:53
• How deep do you want to delve into signal processing? Some engineering courses sidestep most theoretical issues and rely mostly on calculus. – J W Oct 9 '14 at 16:35
• to understand limits and precise definition of limits and neighborhoods ... convergence , conformal mapping ..etc – Eng_Boody Oct 9 '14 at 16:40
• Is your choice of topics based on the answers to your question at dsp.stackexchange.com/questions/18280/study-signal-processing? – J W Oct 9 '14 at 16:55
• You may also wish to look at math.stackexchange.com/questions/617625/… on MSE. – J W Oct 9 '14 at 16:58