This operator can be called with three or four arguments.
RealLimit(f(x), For(x, a)), rendered as limx→af(x), is equivalent to Limit(f(x), For(x, a), Element(x, RR)) but renders to LaTeX without displaying the predicate x∈R
which readers will typically understand from context.
RealLimit(f(x), For(x, a), P(x)), rendered as limx→a,P(x)f(x), is equivalent to Limit(f(x), For(x, a), And(Element(x, RR), P(x))).
The expression For(x, a) declares x as a locally bound variable within the scope of the arguments to this operator.
Definitions:
| Fungrim symbol | Notation | Short description |
|---|---|---|
| RealLimit | limx→af(x) | Limiting value, real variable |
| Limit | limx→af(x) | Limiting value |
| RR | R | Real numbers |
Source code for this entry:
Entry(ID("6fe5c1"),
SymbolDefinition(RealLimit, RealLimit(f(x), For(x, a)), "Limiting value, real variable"),
Description("This operator can be called with three or four arguments."),
Description(SourceForm(RealLimit(f(x), For(x, a))), ", rendered as", RealLimit(f(x), For(x, a)), ", is equivalent to", SourceForm(Limit(f(x), For(x, a), Element(x, RR))), "but renders to LaTeX without displaying the predicate", Element(x, RR), " which readers will typically understand from context."),
Description(SourceForm(RealLimit(f(x), For(x, a), P(x))), ", rendered as", RealLimit(f(x), For(x, a), P(x)), ", is equivalent to", SourceForm(Limit(f(x), For(x, a), And(Element(x, RR), P(x)))), "."),
Description("The expression", SourceForm(For(x, a)), "declares", SourceForm(x), "as a locally bound variable within the scope of the arguments to this operator."))