if and only if

A weight is in if and only if any one of the following hold.

In particular, if and only if its support is empty.

A degree a is of the form b' if and only if 0' a.

A set is if and only if it is open.

If and only if , it is a single point.

Then if and only if can be written in the form where is also a polynomial.

It does if and only if the following do also:

The complex belongs to if and only if the suspension of does.

It must include connectives such as for "if and only if."

Comments; present if and only if the country has multiple rows.

In math terms this means if and only if .

It equals the identity if and only if the characteristic is 2.

A has good reduction at P if and only if (which implies ).

For an element we have if and only if .

It is zero if and only if the strings are equal.

A if and only if not A, a contradiction.

That is so, however, if and only if the life of the community itself is normal.

"You are a leader," he wrote, "if and only if people follow your leadership when they have freedom not to."

You find this young man guilty if and only if you are sure.

Then if and only if is a linear 2-tree.

In his view, a behavior is deviant if and only if society at large considers it so.

This can be done if and only if S is linearly independent.

If and only if the fruit is an apple will Madison eat it.

Each of the following statements is true if and only if :

The rank of a set A is said to be if and only if .