How Many Quadratic Forms Exist on Fp^n for an Odd Prime p?

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SUMMARY

The discussion centers on the existence of quadratic forms on the vector space Fp^n, where p is an odd prime. It establishes that for any field F with characteristic not equal to 2, quadratic forms correspond to symmetric bilinear forms, represented by symmetric n × n matrices over F. The conversation highlights the equivalence of these forms and suggests that the number of quadratic forms is finite, contingent on the properties of the field and the dimension of the vector space.

PREREQUISITES
  • Understanding of finite fields, specifically Fp
  • Knowledge of quadratic forms and their properties
  • Familiarity with symmetric bilinear forms
  • Basic linear algebra concepts, particularly regarding vector spaces
NEXT STEPS
  • Research the classification of quadratic forms over finite fields
  • Study the relationship between symmetric bilinear forms and quadratic forms
  • Explore the implications of field characteristics on quadratic forms
  • Investigate the structure of symmetric matrices over finite fields
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Mathematicians, students of algebra, and researchers interested in quadratic forms, finite fields, and linear algebra applications.

alvielwj
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For an odd prime number p let Fp be the field with p elements, ie. the integers {0...,p-1} with addition and multiplication defined modulo p. How many quadratic forms are there on the vector space Fp^n

I don even know how to start this question
 
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are there infinite many quadratic forms on the vector space R^n ?
 
If F is any field with characteristic not 2, on Fn the quadratic forms are equivalent to the symmetric bilinear forms (essentially the symmetric n × n matrices over F).
 

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