be denoted by vs be denoted by x

Some examples from the web:

• Berlin, Germany. Spain / Spanish. Well, I wanted to know the rules in general, but here's an example: "This parameter will be denoted by/as x". Thanks again!
• The intensity (at any point) of the field due to the magnetization may be denoted by H i, that of the external field by Ho, and that of the resultant field by H.
• F(G) will be denoted by U= U(G, F). Theorem,. (a) Let F(G) be semisimple. Then U is nilpotent if and only i/ G is abelian. (b) Let p be a prime dividing the order 0/ ...
• Jun 30, 2014 ... Can straight lines be denoted by capital letters? up vote 1 down vote favorite. I've recently noticed an answer where a line was represented by ...

Some examples from the web:

• Similarly, a subset of X is a principal lower set of a poset (X, ≤) precisely if it can be denoted by X≤(x) for some x in X. And since ~ is the symbol for the ...
• A topological space X, with topology T, will be denoted by (X, T). 1.3.2. A uniform space X, with uniform structure. U, will be denoted by. [X, U]; the topology which ...
• honey, quantities of which will be denoted by x and y: x denotes loaves of bread and y denotes pints of honey. Neither the girls nor the boys are well endowed: ...
• The particle's location is specified by its coordinate, which will be denoted by x or y. As the particle moves, its coordinate changes with the time, t. The change in ...