User:Jmcclaskey54/sandbox

${\mathcal {P}}$
P

Example of url: https://www.iso.org/standard/64973.html

The metric tensor is represented by a U-shaped loop or an upside-down U-shaped loop, depending on the type of tensor that is used.

metric tensor $g^{ab}$

metric tensor $g_{ab}$

The metric tensor is represented by a U-shaped loop or an upside-down U-shaped loop, depending on the type of tensor that is used.

$g^{ab}$

$g_{ab}$

Example of external link: Albert Einstein’s The Principle of Relativity

random text $$\forall x\,(x^{2}=y)$$ $$\forall y\,\exists x\,\left(x={\sqrt {y}}\right)$$

I see I even botched the display for {{math}}