Show us why the public should always call a land surveyor

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  • GEO Ambassador

    A map defined by one or more polynomials. Given aΒ fieldΒ K, a polynomial map is a mapΒ f:K^n->K^mΒ such that for all pointsΒ (x_1,...,x_n) in K^n,

    f(x_1,...,x_n)=(g_1(x_1,...,x_n),...,g_m(x_1,...,x_n)),

    for suitable polynomialsΒ g_1,...,g_m in K[X_1,...,X_n]. TheΒ zero setΒ ofΒ fΒ is the set of all solutions of the simultaneous equationsΒ g_1=...=g_m=0, and is an algebraic variety inΒ K^n.

    An example of polynomial map is theΒ ith coordinate mapΒ delta_i:K^n->K, defined byΒ delta_i(x_1,...,x_n)=x_iΒ for allΒ i=1,...,n. In the language ofΒ set theory, it is the projection of theΒ Cartesian productΒ K^nΒ onto theΒ ith factor.

    Polynomial maps can be defined on any nonempty subsetΒ SΒ ofΒ K^n. IfΒ SΒ is anΒ affine variety, then the set of all polynomial maps fromΒ SΒ toΒ KΒ is theΒ coordinate ringΒ K[S]Β ofΒ S. IfΒ TΒ is anΒ affine varietyΒ ofΒ K^m, then every polynomial mapΒ f:S->TΒ induces aΒ ring homomorphismΒ F:K[T]->K[S], defined byΒ F(phi)=phi degreesf. Conversely, everyΒ ring homomorphismΒ G:K[T]->K[S]Β determines a polynomial mapΒ g:S->T, whereΒ g=(G(delta_1),...,G(delta_m)).

    A polynomial mapΒ f:R->RΒ is a real-valued polynomial function. Its graph is the plane algebraic curve with Cartesian equationΒ y=f(x).

    and

    This looks interestingΒ to check out Β andΒ thisΒ  hope this helps

    Field
    A field is any set of elements that satisfies the field axioms for both addition and multiplication and is a commutative division algebra. An archaic…
    • GEO Ambassador
      All I could find at the time til someone came along...cheers!
    • Student Surveyor

      Thanks Justin

      But hmmmm i really dont understand what you have said

      thanks for the download

      cheers

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