My Math Forum matrix ij dimension, find multiple of a(n,m)?

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 July 5th, 2017, 08:38 AM #1 Newbie   Joined: Jun 2017 From: canada Posts: 9 Thanks: 0 matrix ij dimension, find multiple of a(n,m)? Hi everybody. could you please help me? If I have a matrix of dimension ij . i is alway even, and j is always odd. all numbers in the matrix are consecutive. such as a(1,1)=1 a (1,2)=2 a(1,3)= 3 … a(1,i)= i a(2,1)=i+1 a (2,2)=i+2 a(2,3)=i+3 … a(2,i)=2i … a(j,1)=ji-j a(j,1)=ji-j+1 a(j,2)=ji-j+2 … a(j,i)=ji for the number a(n,m) is there a f(x,y) such as to easily find all his multiple. Thank you very much
 July 5th, 2017, 05:52 PM #2 Senior Member   Joined: Dec 2012 From: Hong Kong Posts: 853 Thanks: 311 Math Focus: Stochastic processes, statistical inference, data mining, computational linguistics What do you mean by 'multiple' here?
 July 6th, 2017, 10:06 AM #3 Newbie   Joined: Jun 2017 From: canada Posts: 9 Thanks: 0 sorry as i'm french, i made a direct translation. It means all number like as,t that are divisible by an,m. Is there a function for that? thank you. Last edited by joswhale; July 6th, 2017 at 10:15 AM.

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