I need to use subscripts to define a system of equation and its respective variables. I do not encounter any problem when I use solve or Basis (with Groebner package) but when I tried to use RealRootCounting (with RegularChains and SemiAlgebraicSetTools packages), I got the following error message:
Error, (in RegularChains:-SemiAlgebraicSetTools:-RealRootCounting) invalid input: TRDnearsolve expects its 5th argument, vlist, to be of type list(symbol), but received [p, x, q, u]
Clearly [p,x,q,u] is a list but the type of p is indexed and not symbol, this is my guess of what is going wrong.
Now is there any easy-work around this? I looked for similar questions here, tried to use the command convert but so far no luck. :-(