## Logic, Proofs, Sets, Functions, Number Theory

For the discussion of math. Duh.

Moderators: gmalivuk, Moderators General, Prelates

Posts: 14
Joined: Tue Mar 09, 2010 7:14 pm UTC

### Logic, Proofs, Sets, Functions, Number Theory

Hey everyone,

I'm taking a course on (as listed in the subject line) logic, proofs, sets, functions, number theory (integers and division, primes), and mathematical induction.

And of course, I'm lost! I've been a great Math student all my life, and I thought this stuff was easy and proceeded to procrastinate. Turns out it's actually pretty hard to wrap your mind around this stuff.

As of today I feel pretty good with logic, predicates, proofs (direct, by contradiction, by contra-positive) and sets. When it comes to functions (one-to-one, onto) I'm a bit confused because the type of things you have to show/prove I find are quite difficult to do.

I find my textbook does very little in the way of helping me solve the assignments my teacher gives me, while at the same time my teacher's lecture notes are useless since I don't know the solutions to the examples he as given in class.

This brings me to the reason I'm creating this topic: I am humbly requesting any books or online resources where I can read up and learn about all this good stuff.

Any help is greatly appreciated, thank you!

voidPtr
Posts: 140
Joined: Sun Apr 26, 2009 6:53 pm UTC

### Re: Logic, Proofs, Sets, Functions, Number Theory

What level is the course? These topics are very standard in a typical first or second year discrete structures course. I'd go to your university bookstore or used bookstores or whever and check under the math/computer science section for discrete math related books and find one you like that covers these selection of topics.

Cheers.