Different math rendering in Beamer?

Question

When using beamer for presentations, I notice that the rendering for math becomes quite different, and I really prefer the usual rendering, say, when typing a paper. The symbols look a bit less formal, and less aesthetically pleasing...

Is it possible to use the regular rendering of math symbols in the beamer package?

That is, I'd like:

to look more like:

Answer 1

Beamer uses sans serif math to match sans serif body fonts.

If you want serifs, say \usefonttheme{serif}. If you want the math to be serifed, but the body to be sans serif, say \usefonttheme[onlymath]{serif}