Author: David_Corfield Format: MarkdownItexAdded a reference for these results. No doubt there's a textbook source to be had.
<a href="https://ncatlab.org/nlab/revision/diff/even+cohomology+theory/6">diff</a>, <a href="https://ncatlab.org/nlab/revision/even+cohomology+theory/6">v6</a>, <a href="https://ncatlab.org/nlab/show/even+cohomology+theory">current</a>
Added a reference for these results. No doubt there’s a textbook source to be had.
Author: Urs Format: MarkdownItexI have added pointer to the statement of existence of complex orientation ([here](https://ncatlab.org/nlab/show/even+cohomology+theory#ComplexOrientation)) to where on the $n$Lab this is discussed (proven), namely [here](https://ncatlab.org/nlab/show/complex+oriented+cohomology+theory#ComplexOrientationOfEvenCohomologyTheories).
<a href="https://ncatlab.org/nlab/revision/diff/even+cohomology+theory/8">diff</a>, <a href="https://ncatlab.org/nlab/revision/even+cohomology+theory/8">v8</a>, <a href="https://ncatlab.org/nlab/show/even+cohomology+theory">current</a>
I have added pointer to the statement of existence of complex orientation (here) to where on the Lab this is discussed (proven), namely here.