login
This site is supported by donations to The OEIS Foundation.

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A121736 Dimensions of the irreducible representations of the simple Lie algebra of type E7 over the complex numbers, listed in increasing order. 10

%I

%S 1,56,133,912,1463,1539,6480,7371,8645,24320,27664,40755,51072,86184,

%T 150822,152152,238602,253935,293930,320112,362880,365750,573440,

%U 617253,861840,885248,915705,980343,2273920,2282280,2785552,3424256,3635840

%N Dimensions of the irreducible representations of the simple Lie algebra of type E7 over the complex numbers, listed in increasing order.

%C We include "1" for the 1-dimensional trivial representation and we list each dimension once, ignoring the possibility that inequivalent representations may have the same dimension.

%C See also comments in A030649.

%D N. Bourbaki, Lie groups and Lie algebras, Chapters 4-6, Springer, 2002.

%D J. E. Humphreys, Introduction to Lie algebras and representation theory, Springer, 1997.

%H Skip Garibaldi, <a href="/A121736/b121736.txt">Table of n, a(n) for n = 1..2856</a>

%H Wikipedia, <a href="http://en.wikipedia.org/wiki/E7_%28mathematics%29">E_7 (mathematics)</a>

%F Given a vector of 7 nonnegative integers, the Weyl dimension formula tells you the dimension of the corresponding irreducible representation. The list of such dimensions is then sorted numerically.

%e The highest weight 0000000 corresponds to the 1-dimensional module on which E7 acts trivially. The smallest faithful representation of E7 is the so-called "standard" representation of dimension 56 (the second term in the sequence), with highest weight 0000001; it is minuscule and supports the famous invariant quartic form. The adjoint representation of dimension 133 (the third term in the sequence), has highest weight 1000000.

%o (GAP) # see program given in sequence A121732

%Y Cf. A121732, A121737, A121738, A121739, A104599, A121741, A030649.

%K nonn

%O 1,2

%A Skip Garibaldi (skip(AT)member.ams.org), Aug 18 2006

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 17 23:15 EST 2019. Contains 319251 sequences. (Running on oeis4.)