# ApCoCoA-1:DA.PseudoReduce

From ApCoCoAWiki

## DA.PseudoReduce

Calculate a pseudo normal form of a differential polynomial.

### Syntax

DA.PseudoReduce(F:POLY, G:LIST):POLY

### Description

DA.PseudoReduce computes the pseudo normal form of the differential polynomial F wrt. the list G of differential polynomials.

@param

*F*Differential polynomial for which to compute the pseudo normal.@param

*G*List of differential polynomials wrt. which the normal form of F has to be computed.@return The pseudo normal form of F wrt. G.

#### Example

Use Q[x[1..1,0..20]]; Use Q[x[1..1,0..20]], Ord(DA.DiffTO(<quotes>Lex</quotes>)); DA.PseudoReduce(x[1,1]^4+x[1,0], [x[1,0]^2+3x[1,0]]); ------------------------------- -3x[1,0] -------------------------------