class JAS::PolyRing

Represents a JAS polynomial ring: GenPolynomialRing.

Provides more convenient constructor. Then returns a Ring.

Attributes

grad[R]

the Java term orderings

lex[R]

the Java term orderings

Public Class Methods

new(coeff,vars,order=Order::IGRLEX) click to toggle source

Ring constructor.

coeff = factory for coefficients, vars = string with variable names, order = term order or weight matrix.

Calls superclass method JAS::Ring::new

     # File examples/jas.rb
2365 def initialize(coeff,vars,order=Order::IGRLEX)
2366     if coeff == nil
2367         raise ArgumentError, "No coefficient given."
2368     end
2369     cf = coeff;
2370     if coeff.is_a? RingElem
2371         cf = coeff.elem.factory();
2372     end
2373     if coeff.is_a? Ring
2374         cf = coeff.ring;
2375     end
2376     if vars == nil
2377         raise ArgumentError, "No variable names given."
2378     end
2379     names = vars;
2380     if vars.is_a? String
2381        names = GenPolynomialTokenizer.variableList(vars);
2382     end
2383     nv = names.size;
2384     to = Order::IGRLEX; #self.class.grad;
2385     if order.is_a? TermOrder
2386         to = order;
2387     end
2388     if order.is_a? Array
2389         to = TermOrder.reverseWeight(order);
2390     end
2391     @ring = GenPolynomialRing.new(cf,nv,to,names);
2392     #@ring = tring;
2393     super("",@ring) 
2394 end

Public Instance Methods

to_s() click to toggle source

Create a string representation.

     # File examples/jas.rb
2399 def to_s()
2400     return @ring.toScript();
2401 end