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2. File:Multiplication of Positive and Negative Numbers.svg

   en.wikipedia.org/wiki/File:Multiplication_of...

   In the middle part, the text 2 × (-4) is written in black, except for the negative sign, which is blue. Below, there is a black number line partially graduated from -8 to 8. The first blue arc shaped arrow jumps from 1 to -4. Above it is the text 1 × (-4) . An identical arrow jumps from -4 to -8, and the text 2 × (-4) is written above.

3. File:Inversion of less-than-relation by multiplication with ...

   en.wikipedia.org/wiki/File:Inversion_of_less...

   English: Implication < < > on the real number line. Deutsch: Implikation a < 0 ⇒ x < y ⇒ a x > a y {\displaystyle a<0\Rightarrow x<y\Rightarrow ax>ay} dargestellt auf der reellen Zahlengeraden. Date

4. Negative number - Wikipedia

   en.wikipedia.org/wiki/Negative_number

   In mathematics, a negative number is the opposite of a positive real number. [1] Equivalently, a negative number is a real number that is less than zero. Negative numbers are often used to represent the magnitude of a loss or deficiency. A debt that is owed may be thought of as a negative asset.

5. Multiplication - Wikipedia

   en.wikipedia.org/wiki/Multiplication

   Multiplication by a positive number preserves the order: For a > 0, if b > c, then ab > ac. Multiplication by a negative number reverses the order: For a < 0, if b > c, then ab < ac. The complex numbers do not have an ordering that is compatible with both addition and multiplication. [30]

6. Arithmetic - Wikipedia

   en.wikipedia.org/wiki/Arithmetic

   Integer arithmetic is the branch of arithmetic that deals with the manipulation of positive and negative whole numbers. [63] Simple one-digit operations can be performed by following or memorizing a table that presents the results of all possible combinations, like an addition table or a multiplication table.

7. Talk:Negative number - Wikipedia

   en.wikipedia.org/wiki/Talk:Negative_number

   You are defining that multiplication of negative numbers follows the rules of a ring. If we had that a times b is 0 if either a or b is negative that would also be consistent with the rules for the multiplication for non-negative numbers. It is because we want the rules for negative numbers to be nicer than that that they are defined the way ...