Skip to main content

Target SSM multi -singularity Thom polynomials of contact multi -singularities of relative dimension 4


codimension 0

codimension 1

codimension 2

codimension 3

codimension 4

  • Target SSM multisingularity Thom polynomial in monomial basis:
  • +t^4*( s[[]] )
    +t^5*( -s[[1]] )
    +t^6*( -s[[2]] +s[[1,1]] )
    +t^7*( -s[[3]] +2*s[[1,2]] -s[[1,1,1]] )
    +t^8*( 2*s[[1,3]] +s[[2,2]] -3*s[[1,1,2]] +s[[1,1,1,1]] )
    +t^9*( -6*s[[5]] +2*s[[2,3]] -3*s[[1,1,3]] -3*s[[1,2,2]] +4*s[[1,1,1,2]] -s[[1,1,1,1,1]] )
    +t^10*( 13*s[[6]] +13*s[[1,5]] +s[[3,3]] -6*s[[1,2,3]] -s[[2,2,2]] +4*s[[1,1,1,3]] +6*s[[1,1,2,2]] -5*s[[1,1,1,1,2]] +s[[1,1,1,1,1,1]] )
    +t^11*( -31*s[[7]] -32*s[[1,6]] +14*s[[2,5]] -21*s[[1,1,5]] -3*s[[1,3,3]] -3*s[[2,2,3]] +12*s[[1,1,2,3]] +4*s[[1,2,2,2]] -5*s[[1,1,1,1,3]] -10*s[[1,1,1,2,2]] +6*s[[1,1,1,1,1,2]] -s[[1,1,1,1,1,1,1]] )
    +t^12*( s[[1,1,1,1,1,1,1,1]] -7*s[[1,1,1,1,1,1,2]] +15*s[[1,1,1,1,2,2]] -10*s[[1,1,2,2,2]] +s[[2,2,2,2]] +6*s[[1,1,1,1,1,3]] -20*s[[1,1,1,2,3]] +12*s[[1,2,2,3]] +6*s[[1,1,3,3]] -3*s[[2,3,3]] +30*s[[1,1,1,5]] -45*s[[1,2,5]] +16*s[[3,5]] +58*s[[1,1,6]] -37*s[[2,6]] +86*s[[1,7]] +62*s[[8]] )

    codimension 5

    codimension 6

    codimension 7

    codimension 8

  • Target SSM multisingularity Thom polynomial in monomial basis:
  • +t^8*( -s[[4]] )
    +t^9*( 4*s[[5]] +2*s[[1,4]] )
    +t^10*( -3*s[[1,1,4]] +2*s[[2,4]] -9*s[[1,5]] -10*s[[6]] )
    +t^11*( 4*s[[1,1,1,4]] -6*s[[1,2,4]] +2*s[[3,4]] +15*s[[1,1,5]] -10*s[[2,5]] +25*s[[1,6]] +20*s[[7]] )
    +t^12*( 27*s[[2,6]] -51*s[[8]] -63*s[[1,7]] -5*s[[1,1,1,1,4]] +12*s[[1,1,2,4]] -3*s[[2,2,4]] -6*s[[1,3,4]] -22*s[[1,1,1,5]] +33*s[[1,2,5]] -13*s[[3,5]] -46*s[[1,1,6]] )

    codimension 9

  • Target SSM multisingularity Thom polynomial in monomial basis:
  • +t^9*( s[[5]] )
    +t^10*( -4*s[[6]] -2*s[[1,5]] )
    +t^11*( 10*s[[7]] +9*s[[1,6]] -2*s[[2,5]] +3*s[[1,1,5]] )
    +t^12*( -20*s[[8]] -25*s[[1,7]] +10*s[[2,6]] -2*s[[3,5]] -15*s[[1,1,6]] +6*s[[1,2,5]] -4*s[[1,1,1,5]] )

    codimension 10

    codimension 11

    codimension 12

  • Target SSM multisingularity Thom polynomial in monomial basis:
  • +t^12*( 16*s[[8]] +8*s[[1,7]] +4*s[[2,6]] +2*s[[3,5]] +2*s[[4,4]] )