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- From: deghare@daisy.uwaterloo.ca (Dave Hare)
- Subject: Re: Geometrical parking problem.
- Message-ID: <Bxys1K.4Fo@watdragon.uwaterloo.ca>
- Sender: news@watdragon.uwaterloo.ca (USENET News System)
- Organization: University of Waterloo
- References: <1992Nov17.225821.6579@augean.eleceng.adelaide.edu.AU> <1992Nov18.101107.29182@infodev.cam.ac.uk> <1992Nov18.143131.25971@schaefer.math.wisc.edu>
- Date: Thu, 19 Nov 1992 12:58:31 GMT
- Lines: 19
-
- In article <1992Nov18.143131.25971@schaefer.math.wisc.edu> mueller@schaefer.UUCP (Carl Douglas Mueller) writes:
- >In article <1992Nov18.101107.29182@infodev.cam.ac.uk> rgep@emu.pmms.cam.ac.uk (Richard Pinch) writes:
- >>In article <1992Nov17.225821.6579@augean.eleceng.adelaide.edu.AU>
- >>dabbott@augean.eleceng.adelaide.edu.AU (Derek Abbott) writes:
- >>>
- >>>A car of length L reverses into a parking space without touching the kerb.
- >>>Has anyone calculated the minimum theoretical length of the parking space?
- >>
- >>Yes, it's the length of the car. The commutator of two rotations is
- >>a translation, so you can drive sideways by making very small moves of
- >>the form LRLR.
- >
- > Actually, there is no MINIMUM. The length of the car is not quite enough,
- > but the length of the car plus epsilon (for any positive epsilon) is enough.
-
- Is everybody taking into account the fact that rear wheels don't (generally)
- turn?
-
- Dave Hare
-