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On tight Euclidean $6$-designs: an experimental result
Euclidean designs spherical designs tight designs distance sets
2011/1/19
A finite set X n with a weight function w : X 0 is called Euclidean t-design in n (supported by p concentric spheres) if the following condition ho...
A universality result for endomorphism monoids of some ultrahomogeneous structures
endomorphism monoid Fra¨ı ss´ e limit pushout
2010/12/7
We devise a fairly general sufficient condition ensuring that the endomorphism monoid of a countably infinite ultrahomogeneous structure (i.e. a Fra¨ıss´e limit) embeds all countable semigr...