Sentence examples for if is essential from inspiring English sources

Then is essential in if and only if is essential in.

The set-valued map (S_{w}) is lower semicontinuous at (uin M) if and only if u is essential.

Virginia Ironside asks if faithfulness is essential for couples or if adultery can be acceptable.

Only overtake if it is essential and make sure your horse wears a red ribbon if he kicks.

Families now only accompany workers if that is essential to fill positions, say officials.

If travel is "essential," it said, "seats will be allocated to you on trains tomorrow".

We will write the dependence of constants on parameters explicitly if it is essential.

London Midland is advising passengers to travel only if it is essential.

Trust makes cooperation possible, rather than simply easier, if trust is essential to promising.

If partnership is essential, what are the other ingredients for successful integrated approaches?

Here we examine if OD is essential to these parasites.