How do I declare that a variable represents a real number?
9737
Complex number operations: telling Mathematica variables are real
19004
How is floating point stored? When does it matter?
14256
How to form a regex to recognize correct declaration of variable names
83836
How to convert integer value into real value like 2 into 2.d0 in output of matrix in FortranForm?
128674
Is it possible to declare two variables of different types in a for loop?
116495
How to eliminate the zero real part of a purely imaginary number?
86057
What variable type for extremely big integer numbers?
54543
Calling member function of number literal
36222
What does it mean when a numeric constant in C/C++ is prefixed with a 0?
25788
Prove that $i^i$ is a real number
22498
In set theory, how are real numbers represented as sets?
14791
Can you pick a random natural number? And a random real number?
23015
How to name variables on the fly?
106788
How can I assign a number or value of variable into a character in Fortran77/90
73846
Tell Wolfram Alpha that a variable is a natural number
33934
understanding floating point variables
78294
How does one denote the set of  all positive real numbers?