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After a brief review of string and M -Theory we point out some deficiencies. Partly to cure them, we present several arguments for “F -Theory”, enlarging spacetime to (2, 10) signature, following the original suggestion of C. Vafa. We introduce a suggestive Supersymmetric 27-plet of particles, associated to the exceptional symmetric hermitian space E6/Spin c(10). Several possible future directi...
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One of the fundamental issues in the design of linguistic theory concerns the overall complexity of the grammar. By Occam’s razor, given two competing grammars (or theories) of equal descriptive power, the one that is less complex should be preferred. Since the beginnings of generative linguistics, a number of principles and constraints have been devised in order to keep this complexity to the ...
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ژورنال
عنوان ژورنال: Modern Physics Letters A
سال: 2006
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s0217732306019335