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  2. Extended real number line - Wikipedia

    en.wikipedia.org/wiki/Extended_real_number_line

    In mathematics, the extended real number system [a] is obtained from the real number system by adding two elements denoted + and [b] that are respectively greater and lower than every real number. This allows for treating the potential infinities of infinitely increasing sequences and infinitely decreasing series as actual infinities .

  3. Numeric precision in Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Numeric_precision_in...

    Excel maintains 15 figures in its numbers, but they are not always accurate; mathematically, the bottom line should be the same as the top line, in 'fp-math' the step '1 + 1/9000' leads to a rounding up as the first bit of the 14 bit tail '10111000110010' of the mantissa falling off the table when adding 1 is a '1', this up-rounding is not undone when subtracting the 1 again, since there is no ...

  4. Additional Mathematics - Wikipedia

    en.wikipedia.org/wiki/Additional_Mathematics

    In the HKDSE, additional mathematics has been replaced by two Mathematics Extend Modules, which include a majority of topics in the original additional mathematics, and a few topics, such as matrix and determinant, from the syllabus of HKALE pure mathematics and applied mathematics, while notably missing analytic geometry, inequalities ...

  5. Projectively extended real line - Wikipedia

    en.wikipedia.org/wiki/Projectively_extended_real...

    The projectively extended real line extends the field of real numbers in the same way that the Riemann sphere extends the field of complex numbers, by adding a single point called conventionally ∞. In contrast, the affinely extended real number line (also called the two-point compactification of the real line) distinguishes between +∞ and ...

  6. Extended natural numbers - Wikipedia

    en.wikipedia.org/wiki/Extended_natural_numbers

    In topology, the topos of right actions on the extended natural numbers is a category PRO of projection algebras. [ 4 ] In constructive mathematics , the extended natural numbers N ∞ {\displaystyle \mathbb {N} _{\infty }} are a one-point compactification of the natural numbers, yielding the set of non-increasing binary sequences i.e. ( x 0 ...

  7. Addition - Wikipedia

    en.wikipedia.org/wiki/Addition

    A number-line visualization of the algebraic addition 2 + 4 = 6. A "jump" that has a distance of 2 followed by another that is long as 4, is the same as a translation by 6. A number-line visualization of the unary addition 2 + 4 = 6. A translation by 4 is equivalent to four translations by 1.