A mathematical proof is a sequence of statements that follow on logically from each other that shows that something is always true. Using letters to stand for numbers means that we can make statements ...

In algebra, letters are used to stand for values that can change (variables) or for values that are not known (unknowns). A term is a number or letter on its own, or numbers and letters multiplied ...

Researchers have discovered a method to simultaneously measure gene number and protein expression in individual cells. The fluorescence microscopy technique could permit a detailed analysis of the ...