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- From: minsky@media.mit.edu (Marvin Minsky)
- Newsgroups: sci.math
- Subject: Re: Measures, and Measurability
- Message-ID: <1992Dec21.053850.13489@news.media.mit.edu>
- Date: 21 Dec 92 05:38:50 GMT
- References: <1992Dec18.191446.7806@panix.com>
- Sender: news@news.media.mit.edu (USENET News System)
- Organization: MIT Media Laboratory
- Lines: 17
-
- In article <1992Dec18.191446.7806@panix.com> banana@panix.com (Walter Polkosnik) writes:
- >I am reading a few papers, and they mention the concept of measures
- >(particularily Lebesque measures) and the concept of measurability and the
- >non-measurability of a set. Can anyone provide me with references, or are the
- >concepts simple enough to explain in e-mail or a post?
- >
- >Thanks. I'm just a Physicist, so be gentle
-
- This may be hard to believe, but one of the easiest introductions is
- in an old book by John von Neumann: "Mathematical Foundations of
- Quantum Mechanics". I haven't seen it for ever so long, but I
- remember it as being very clear and intuitive. Starts out with nice
- proof of metric density theorem, which says that if a set of an
- Euclidean space is measurable, then it contains rectangles whose
- measures are arbitrarily close to 1.
-
- .
-