Recent content by c.francis

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    Easy (but not to me) Modern Algebra Proof

    How about this revised version, is this right? Choose an a coprime to n and that does not divide p (2 will work because p is prime and carmichael numbers are odd). Then by FLT, ap-1\equiv1 (mod p), and by definition an-1\equiv1 (mod n). Then because p/n, an-1\equiv1 (mod p). Now this...
  2. C

    Easy (but not to me) Modern Algebra Proof

    Hi everyone, I am hoping that someone can please give me some help with this homework problem. Homework Statement In n>2 is a Carmichael number and p/n is an odd prime, then show that gcd(p-1,n-1) >1 Homework Equations The Attempt at a Solution This is what I did, but I am not...
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    Solving Surface Integral Questions w/Check Solutions

    I just wanted to add that I assumed that the mystery vector r must be touching the same point that the vector "tracing" out the shape is touching. Is that not conceptually correct?
  4. C

    Solving Surface Integral Questions w/Check Solutions

    Surface Integral Question and Solution Check Hi everyone, this is my first post and I was hoping someone could help me check my solution to this problem (which could be completely wrong) and help me get unstuck at part 3. Any help would be greatly appreciated. Homework Statement...
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