Title
Ξ¦:onΒ U:onΒ V:βM(x,y)(xβ²,yβ²)ββΆβΌβΌβR3(X,Y,Z)=(x2+y2+12xβ,x2+y2+12yβ,x2+y2+1x2+y2β1β)(X,Y,Z)=(xβ²2+yβ²2+12xβ²β,xβ²2+yβ²2+12yβ²β,βxβ²2+yβ²2+1xβ²2+yβ²2β1β)βΞ¦:onΒ U:onΒ V:βM(x,y)(xβ²,yβ²)ββΆβΌβΌβR3(X,Y,Z)=(x2+y2+12xβ,x2+y2+12yβ,x2+y2+1x2+y2β1β)(X,Y,Z)=(xβ²2+yβ²2+12xβ²β,xβ²2+yβ²2+12yβ²β,βxβ²2+yβ²2+1xβ²2+yβ²2β1β)β