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Question: Error, (in PolynomialSystemSolvers:-PseudoResultant) too many levels of recursion Unable to catch

Question:Error, (in PolynomialSystemSolvers:-PseudoResultant) too many levels of recursion Unable to catch

nm 8552 Maple 2021
solve stacklimit try-catch
December 16 2021
3

sometimes complicated equation is generated and attempt to solve it fail, which is OK. But there is a case, where Maple generates an internal error from solve(). The problem is that it is not possible to even capture this error using try...catch... end try so the whole program crashes.

Is there a way to trap such errors, so at least it can bypass it without solving it but without terminating the whole program? 

According to help it says

The try statement provides a mechanism for executing statements in a controlled environment, where errors will not just cause the execution to halt with no warning.

Well. The above is not really true.

> 

interface(version);

`Standard Worksheet Interface, Maple 2021.2, Windows 10, November 23 2021 Build ID 1576349`

> 

Physics:-Version()

`The "Physics Updates" version in the MapleCloud is 1115 and is the same as the version installed in this computer, created 2021, December 15, 10:0 hours Pacific Time.`

> 

restart;
> 

eq:=-t^m*y+1/12*(-6*(-(108+12*(6144*(t^m)^3*y^3+81)^(1/2))^(2/3)+96*t^m*y)/(108+12*(6144*(t^m)^3*y^3+81)^(1/2))^(1/3))^(1/2)+1/12*6^(1/2)*((-(-6*(-(108+12*(6144*(t^m)^3*y^3+81)^(1/2))^(2/3)+96*t^m*y)/(108+12*(6144*(t^m)^3*y^3+81)^(1/2))^(1/3))^(1/2)*(108+12*(6144*(t^m)^3*y^3+81)^(1/2))^(2/3)+96*t^m*y*(-6*(-(108+12*(6144*(t^m)^3*y^3+81)^(1/2))^(2/3)+96*t^m*y)/(108+12*(6144*(t^m)^3*y^3+81)^(1/2))^(1/3))^(1/2)+72*(108+12*(6144*(t^m)^3*y^3+81)^(1/2))^(1/3))/(108+12*(6144*(t^m)^3*y^3+81)^(1/2))^(1/3)/(-6*(-(108+12*(6144*(t^m)^3*y^3+81)^(1/2))^(2/3)+96*t^m*y)/(108+12*(6144*(t^m)^3*y^3+81)^(1/2))^(1/3))^(1/2))^(1/2) = t^(m-1)*(-y+1/12*(-6*(-(108+12*(6144*y^3+81)^(1/2))^(2/3)+96*y)/(108+12*(6144*y^3+81)^(1/2))^(1/3))^(1/2)+1/12*6^(1/2)*((-(-6*(-(108+12*(6144*y^3+81)^(1/2))^(2/3)+96*y)/(108+12*(6144*y^3+81)^(1/2))^(1/3))^(1/2)*(108+12*(6144*y^3+81)^(1/2))^(2/3)+96*y*(-6*(-(108+12*(6144*y^3+81)^(1/2))^(2/3)+96*y)/(108+12*(6144*y^3+81)^(1/2))^(1/3))^(1/2)+72*(108+12*(6144*y^3+81)^(1/2))^(1/3))/(108+12*(6144*y^3+81)^(1/2))^(1/3)/(-6*(-(108+12*(6144*y^3+81)^(1/2))^(2/3)+96*y)/(108+12*(6144*y^3+81)^(1/2))^(1/3))^(1/2))^(1/2)):
> 

sol:=solve(eq,m)  assuming t>0;

Error, (in PolynomialSystemSolvers:-PseudoResultant) too many levels of recursion

> 

try
    sol:=solve(eq,m)  assuming t>0;
catch:
    print("Cought error");
end try;

Error, (in PolynomialSystemSolvers:-PseudoResultant) too many levels of recursion

> 

 

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