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- Xref: sparky sci.physics:23367 sci.math:18702
- Newsgroups: sci.physics,sci.math
- Path: sparky!uunet!enterpoop.mit.edu!galois!riesz!jbaez
- From: jbaez@riesz.mit.edu (John C. Baez)
- Subject: Re: The confusion of tongues
- Message-ID: <1993Jan24.032853.8671@galois.mit.edu>
- Sender: news@galois.mit.edu
- Nntp-Posting-Host: riesz
- Organization: MIT Department of Mathematics, Cambridge, MA
- References: <1jd41cINNdh4@gap.caltech.edu> <1jlhucINNrtj@darkstar.UCSC.EDU> <COLUMBUS.93Jan21101415@strident.think.com>
- Distribution: usa
- Date: Sun, 24 Jan 93 03:28:53 GMT
- Lines: 22
-
- Michael Weiss asks:
-
- On the topic of mathematicians' vs. physicists' notation, does anyone know
- why most mathematicians will write an integral as shown below on the left
- (unless they omit the dummy variable x entirely), whereas physicists prefer
- the form on the right?
-
- / /
- | f(x) dx | dx f(x)
- / /
-
- With the left-hand form, the integral sign and the dx act as delimiters.
- With the right hand form, the combination of integral sign with dx stands
- for a linear operator. Neither interpretation seems to favor one side of
- the cultural divide.
-
- -----
- I have noticed this too and have always thought it was because
- physicists write more nasty multiple integrals. For these, it is nice
- to be able to see the dx in front so you can tell right away what
- you are integrating with respect to, before plunging into the thick of
- the integrand itself.
-