[vil]

Attention: I’m not a teacher.

Hi NearThere,

There are some definitions and examples concerning the matter in question.

something that is slightly different from the usual form of something
variant of/on
This game is a variant of netball.
a variant on the typical Hollywood hero
variant = form
a slightly different form of a word or phrase:
spelling variants in British and American English

variable = something that may be different in different situations, so that you cannot be sure what will happen:
There are too many variables in the experiment to predict the result accurately.
a mathematical quantity which can represent several different amounts

Coincidentally, this example also illustrates he second variant : it is adventitious that the largest element among those available occurs in the first..
No scanning is needed in the third variant , where the diagonal elements are prescribed.
Each has variants; for each there are circumstances which favour its use.
This method has a number of variants.
The variants derive mainly from the choice of pivot.

You have just changed an independent variable .
The same procedure was then applied using only the Pugh score as independent variable to predict outcome at six weeks (Pugh model).
We have, therefore, treated as if it were an artificial variable .
The new non-basic variable must be labelled correctly: &sgr; J (or x J).
To complete an alternating BFS, we must find a further basic variable (with value 0) for each row.
This objective can be rewritten in terms of the structural variables as say.
The variables corresponding to the remaining edges on these paths will be reverse variables.

Regards.

V.