MathAction SandBoxTroubleWithOperators

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Operators are not immutable. Operator properties are dynamic and among other things affect equality!

fricas

f:=operator 'f

$\label{eq1}f$

(1)

Type: BasicOperator?

fricas

g:=operator 'f

$\label{eq2}f$

(2)

Type: BasicOperator?

fricas

test(f=g)

$\label{eq3} \mbox{\rm true}$

(3)

Type: Boolean

fricas

test(kernels f(x) = kernels g(x))

$\label{eq4} \mbox{\rm true}$

(4)

Type: Boolean

fricas

test(f(x)=g(x))

$\label{eq5} \mbox{\rm true}$

(5)

Type: Boolean

fricas

name f

$\label{eq6}f$

(6)

Type: Symbol

fricas

name g

$\label{eq7}f$

(7)

Type: Symbol

Change or add a property.

fricas

display(g,(x:List OutputForm):OutputForm+->prefix('G,x)$OutputForm)

$\label{eq8}f$

(8)

Type: BasicOperator?

fricas

g(x)

$\label{eq9}G \left({x}\right)$

(9)

Type: Expression(Integer)

fricas

test(f=g)

$\label{eq10} \mbox{\rm false}$

(10)

Type: Boolean

fricas

test(kernels f(x) = kernels g(x))

$\label{eq11} \mbox{\rm false}$

(11)

Type: Boolean

fricas

test(f(x)=g(x))

$\label{eq12} \mbox{\rm false}$

(12)

Type: Boolean

fricas

name f

$\label{eq13}f$

(13)

Type: Symbol

fricas

name g

$\label{eq14}f$

(14)

Type: Symbol

Subject: Be Bold !!

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