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On the wikipedia page for Morse theory it states the following

A smooth real-valued function on a manifold M is a Morse function if it has no degenerate critical points. A basic result of Morse theory says that almost all functions are Morse functions. Technically, the Morse functions form an open, dense subset of all smooth functions M → R in the C2 topology. This is sometimes expressed as "a typical function is Morse" or "a generic function is Morse".

however no reference is given. After searching for a bit I cannot find this basic result in any papers on Morse Theory. Can anyone provide a reference for this statement?

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    $\begingroup$ This is proved in Hirsch's book Differential Topology. $\endgroup$ – Steve D Jan 7 at 1:06
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    $\begingroup$ You can also check Guillemin and Pollack. $\endgroup$ – jgon Jan 7 at 2:20
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    $\begingroup$ You can also check Milnor h corobodisim theorem $\endgroup$ – Elad Jan 7 at 9:08

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