Theorem of the Day
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Today's Theorem on Friday 18 May, 2012 Welcome
to a gallery whose exhibits are the crowning achievements of mathematics:
her theorems. Each day offers a different theorem (or lemma, law, formula
or identity), each one worthy of adorning the walls of a mathematical Alte Pinakothek, Guggenheim, Louvre, Nail Factory, Tate, Uffizi or Zach Feuer. Each
theorem has been presented so as to be appreciated by as wide an audience
as possible. If you can have a go at a Sudoku puzzle (certainly a mathematical
creature even though not an arithmetical one) then you can have a go at
today's theorem. By 'have
a go' I mean admire it; turn it over in your mind; try to follow the example,
if one is given; if you are studying it on-line, follow the web link,
which will provide a pictorial interpretation, a proof or even a clever
animation. Click on the 'further
reading' link. It will usually take you to the amazon.co.uk page for the book. This is a convenient way to provide full bibliographical details of the book (and often, a view of the contents page and index); it is not a recommendation that you buy the book (but, if you do, this website earns a small referral fee!) When viewing a theorem on-line, the Some days are
harder than others. I hope even the most difficult days offer something
of wonder.
Yesterday's Theorem Tomorrow's Theorem The Whole Jolly Lot
button, top-left, will take you to the complete theorem list. Each theorem is
as self-contained as possible; the 
button, top-right, links to a Glossary page where there is a brief explanation
of some parts of mathematical language; the 
arrow will take you to a related but usually less sophisticated theorem
which may shed light on today's; the 
arrow may point to a theorem which leads on from today's or takes you
deeper into its subject. For some theorems are deeper than others; some
use more technical language than others; some are just harder to understand
than others.
Recent Acquisitions
and
coming soon...
more beautiful theorems!
Mathematician of the Day from The MacTutor History of Mathematics Archive
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