# Pre-requisites to study measure theory?

I would like to study measure theory. Any idea on what I should learn before assuming I already know basic linear algebra (matrix) ?

Thx for

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set theory...more set theory –  user9352 Sep 16 '11 at 20:31
any good online tuto you can point me to ? –  Stephane Kouakou Sep 16 '11 at 20:33
It might be a good idea to know some advanced calculus/basic analysis, just so you have something to "fall back on" (measure on the real line, Lebesgue integration). You should know a bit of basic set theory, and should be comfortable with proofs and mathematical arguments. Measure Theory can be very abstract, or reasonably down-to-earth, so that would also be a factor: the more abstract the viewpoint you follow, the more "mathematical maturity" you will need. –  Arturo Magidin Sep 16 '11 at 20:34
If you can obtain a copy of "Measure Theory" by Paul Halmos, he has a "Chapter 0" in which he lists all the pre-requisites –  Ishihara Sep 4 '12 at 10:47