![]() ![]() Speaking of the Putnam ,if you look it up on you Tube you'll see some wonder solutions to apparently tough problems such as prove that a triangle in the plane formed by a point(a,b) the x-axis and the line y=x has a minimum perimeter and find that number. No wonder Harvard consistently does so well on the Putnam. A Khan Academy é uma organização sem fins lucrativos com a missão de oferecer ensino de qualidade gratuito para qualquer pessoa, em qualquer lugar. the remarkable thing about the second exam was that a third of the class got 100+. Aprenda Matemática, Artes, Programação de Computadores, Economia, Física, Química, Biologia, Medicina, Finanças, História e muito mais, gratuitamente. ![]() I sat for few hours figuring that out the kicked myself. Well since g=g'.Multiply both sides by (g')^-1 and you'll get the right hand side equal e'9the identity in G' and the left is g.(g')^-1, an element that's in G mapping to the identity so it's in the kernel. Then he says "so that g.(g')^-1 is in the kernel." Why you might ask, as I did. In his review of the second exam, one of the questions deal with a homomorphism phi from a group where|G|>N! to a group of order N! must have a kernel.He goes on to say there must be mappings of distinct g and g' in G such that map to the same element in G'. He also reviews his exams which he acknowledges were too difficult.
0 Comments
Leave a Reply. |