Browse Source

Fixes a typo and adds a todo

master
Joshua Moerman 10 years ago
parent
commit
bd4aba53b7
  1. 2
      thesis/notes/Basics.tex
  2. 2
      thesis/notes/Homotopy_Groups_CDGA.tex

2
thesis/notes/Basics.tex

@ -78,7 +78,7 @@ The following two theorems can be found in textbooks about homological algebra s
The latter two theorems have a direct consequence for rational homotopy theory. By taking $A = \Q$ we see that the torsion groups vanish. We have the immediate corollary. The latter two theorems have a direct consequence for rational homotopy theory. By taking $A = \Q$ we see that the torsion groups vanish. We have the immediate corollary.
\Corollary{rational-corollaries}{ \Corollary{rational-corollaries}{
We have the following natural isomorphisms in rational homology, and we can relate rational cohomolgy naturally to rational homology We have the following natural isomorphisms in rational homology, and we can relate rational cohomology naturally to rational homology
\begin{align*} \begin{align*}
H_\ast(X) \tensor \Q &\tot{\iso} H_\ast(X; \Q), \\ H_\ast(X) \tensor \Q &\tot{\iso} H_\ast(X; \Q), \\
H_\ast(X; \Q) \tensor H_\ast(Y; \Q) &\tot{\iso} H_\ast(X \times Y; \Q), \\ H_\ast(X; \Q) \tensor H_\ast(Y; \Q) &\tot{\iso} H_\ast(X \times Y; \Q), \\

2
thesis/notes/Homotopy_Groups_CDGA.tex

@ -36,3 +36,5 @@ Consider the augmented cdga $V(n) = S(n) \oplus \k$, with trivial multiplication
} }
From now on the dual of a vector space will be denoted as $V^\ast = \Hom_\k(V, \k)$. So the above lemma states that there is a bijection $[A, V(n)] \iso \pi^n(A)^\ast$. From now on the dual of a vector space will be denoted as $V^\ast = \Hom_\k(V, \k)$. So the above lemma states that there is a bijection $[A, V(n)] \iso \pi^n(A)^\ast$.
\todo{long exact sequence}