On Thu, Apr 02, 2009 at 11:30:59PM -0500, Uri Guttman wrote:
> any other largish
> duplicate cities you can think of in the states?

Um, New York and New York (except that one of them is not a city and the
other is a subset so that is a duplicate in more than just the name :-)

Going to total size will tend to find unbalanced pairs.  There is a
Toronto in California which is a lot smaller than the Toronto in Ontario
(about 2.5 million in the bigger one which more than dominates the larger
Portland), although the bigger Toronto is not in the states, of course
(although it is a [North] American city :-).  But there is probably a
village of Los Angeles in one of the south-western states that would be a
"pair" for the one in California, or another Boston somewhere.

If you go international, one of the bigger pairs (using the size of the
smaller in the pair as the metric) might be London.  The city of London,
Ontario is a fair size (almost a half million) and there is another London
somewhere back in the old country that is bigger.  Even bigger is Hamilton
- the Ontario Hamilton is .67 million, while the one in Jamaica is nearly
3 million and there could easily be other large cities with that name.

A variation of this might be to find which city of at least half a
million has largest number of cities of the same name that are larger
than themselves.  (I would not be surprised to find 4 or more Hamiltons,
for example.)  Or: for each n in 1.. find the largest community in the
world  which has a name in common with n-1 larger communities.

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