Why should "num3 is num4" result in False?
4419
"is" operator behaves unexpectedly with integers
22602
Why is == true for some Integer objects?
9115
Why does C++ output negative numbers when using modulo?
65986
Arithmetic right shift gives bogus result?
126469
Test -n gives unexpected result
83165
What is the rationale for all comparisons returning false for IEEE754 NaN values?
75261
How to tell whether value is NaN without using isNaN, which has false positives?
27371
A natural number multiplied by some integer results in a number with only ones and zeros
140086
Does $3-4+1$ equal $0$ or $-2$.. or maybe $2$?
151007
Clarification about "int" number that begins with 0
72919
How can I read inputs as numbers?
70585
Why does Assuming[x > 0, TrueQ[x > 0]] return False?
107569
Conditional check for "i == (2^8)" fails when i is 512?
134318
Is it safe to check floating point values for equality to 0?
29812
How do I test if a variable is a number in Bash?
107694
How to test if a number is a primitive root?
13274
Why does \cal{M}_n give “M>”?