Comments on: [MATH198] Multiple lectures posted http://blog.mikael.johanssons.org/archive/2009/11/math198-multiple-lectures-posted/ Because my LiveJournal is too silly Sat, 17 Sep 2011 02:28:35 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Michi http://blog.mikael.johanssons.org/archive/2009/11/math198-multiple-lectures-posted/comment-page-1/#comment-173438 Michi Sun, 22 Nov 2009 16:37:02 +0000 http://blog.mikael.johanssons.org/archive/2009/11/math198-multiple-lectures-posted/#comment-173438 Quite so. I have been somewhat sloppy in my notation choices about whether = denotes equality or isomorphism. I blame the wiki platform. ;-) But yes, the = in the equations P(I) = I and I = 1 + AxI are both supposed to indicate isomorphisms. Quite so. I have been somewhat sloppy in my notation choices about whether = denotes equality or isomorphism. I blame the wiki platform. ;-)

But yes, the = in the equations P(I) = I and I = 1 + AxI are both supposed to indicate isomorphisms.

]]> By: beroal http://blog.mikael.johanssons.org/archive/2009/11/math198-multiple-lectures-posted/comment-page-1/#comment-173437 beroal Sun, 22 Nov 2009 16:16:26 +0000 http://blog.mikael.johanssons.org/archive/2009/11/math198-multiple-lectures-posted/#comment-173437 Hi. I think that we should use isomorphism (?) in “P(I)=I” and “I = 1 + A×I” in the Lecture 8. Thus clarifying why are we proving that ?f,a? is an isomorphism pair.

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