'Not needed' was the exact expression, if I remember rightly.

I couldn't read the exact expression on her face anger, disbelief, disappointment, abandonment, maybe a mixture of them all.

For an even number of bits per symbol, , exact expressions are available.

Next two correctional factors must be found and combined with the previously derived function to find the exact expression.

Essie asked, studying me with almost the exact expression Albert had displayed.

This result can be compared with the exact expression obtained by Hawking.

- that is the exact expression I used - "Paul!

This is a closed and exact expression for the partition function of the system.

If this trick isn't an exact expression of a thought and idea, why is it there?

Copyright is a matter of law, and protects exact expression, not ideas.