Symmetric Polynomials and the Fundamental Theorem of Symmetric Functions — Examples
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✓ 9 results · all verified · 6 also independently AI-judged
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1 · Prerequisites
Abstract Algebra
- Binary Operations, Monoids, Groups and Subgroups
- Cosets, Index and Lagrange's Theorem
- Divisibility, Euclidean Domains, Principal Ideal Domains and Unique Factorisation
- Ideals, Quotient Rings and the Isomorphism Theorems for Rings
- Normal Subgroups and Quotient Groups
- Polynomial Rings, the Division Algorithm and Roots
- Rings, Subrings, Integral Domains and Fields
- Simple Field Extensions and the Construction of the Complex Numbers
- Splitting Fields
- Symmetric Polynomials and the Fundamental Theorem of Symmetric Functions
Number Theory
Real Analysis
2 · Logical flowchart
3 · Items
Example
Reducing a symmetric polynomial in two variables to a polynomial in e₁ and e₂
Example
The lexicographic reduction algorithm in three variables
Counterexample
A fixed unbalanced one-variable substitution need not preserve lexicographic leading terms
Example
Newton's identities through p₄ in three variables
Counterexample
Power sums need not generate the symmetric ring in characteristic two
Example
Complete homogeneous symmetric polynomials and their recurrence in two variables
Example
The discriminant of x²+bx+c and its double-root criterion
Example
The discriminant of x³+px+q is -4p³-27q²
Example
Computing the monic resultant of two quadratics from roots and coefficients
Sources
- K. Conrad, Symmetric Polynomials, Section 2
- K. Conrad, Symmetric Polynomials, Section 3
- D. Grinberg, An Introduction to Algebraic Combinatorics, Chapter 7, Section 7.1
- J. S. Milne, Fields and Galois Theory, discriminant discussion
- J. S. Milne, Fields and Galois Theory, Example 4.37
- J. S. Milne, Fields and Galois Theory, Proposition 4.35