1.
For the sake of brevity, we will always represent this number 2.718281828459... by the letter e.
Leonhard Euler
We shall always denote this number 2.718281828459... by the letter e for succinctness.
3.
1. 0 is a number.
2. The immediate successor of a number is also a number.
3. 0 is not the immediate successor of any number.
4. No two numbers have the same immediate successor.
5. Any property belonging to 0 and to the immediate successor of any number that also has that property belongs to all numbers.
Giuseppe Peano
4.
There has been treatment for hepatitis C, but the treatment has not been overwhelmingly effective, number 1. And number 2, it has had considerable toxicity.
Anthony S. Fauci
5.
What did you do to Amma?" "I was late to school." He studied my face. I studied his. "Number 2?" I nodded. "Sharp?" "Started out sharp and then she sharpened it.
Kami Garcia
6.
Rule number 2 - don't listen to me!" Arriane laughed, "I'm certifiably insane!
Lauren Kate