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  2. Subtraction - Wikipedia

    en.wikipedia.org/wiki/Subtraction

    Subtraction (which is signified by the minus sign −) is one of the four arithmetic operations along with addition, multiplication and division. Subtraction is an operation that represents removal of objects from a collection. [ 1 ]

  3. Significant figures - Wikipedia

    en.wikipedia.org/wiki/Significant_figures

    The Texas Instruments TI-83 Plus (1999) and TI-84 Plus (2004) families of graphical calculators support a Sig-Fig Calculator mode in which the calculator will evaluate the count of significant digits of entered numbers and display it in square brackets behind the corresponding number. The results of calculations will be adjusted to only show ...

  4. Beta decay - Wikipedia

    en.wikipedia.org/wiki/Beta_decay

    The two types of beta decay are known as beta minus and beta plus.In beta minus (β −) decay, a neutron is converted to a proton, and the process creates an electron and an electron antineutrino; while in beta plus (β +) decay, a proton is converted to a neutron and the process creates a positron and an electron neutrino. β + decay is also known as positron emission.

  5. Method of complements - Wikipedia

    en.wikipedia.org/wiki/Method_of_complements

    Using sign-magnitude representation requires only complementing the sign bit of the subtrahend and adding, but the addition/subtraction logic needs to compare the sign bits, complement one of the inputs if they are different, implement an end-around carry, and complement the result if there was no carry from the most significant bit.

  6. Obelus - Wikipedia

    en.wikipedia.org/wiki/Obelus

    The obelus – or division sign – used as a variant of the minus sign in an excerpt from an official Norwegian trading statement form called «Næringsoppgave 1» for the taxation year 2010. The form of the obelus as a horizontal line with a dot above and a dot below, ÷ , was first used as a symbol for division by the Swiss mathematician ...

  7. Logarithm - Wikipedia

    en.wikipedia.org/wiki/Logarithm

    Typical scientific calculators calculate the logarithms to bases 10 and e. [5] ... log b x goes to minus infinity for b > 1 (plus infinity for b < 1, respectively).

  8. Percent sign - Wikipedia

    en.wikipedia.org/wiki/Percent_sign

    The percent sign % (sometimes per cent sign in British English) is the symbol used to indicate a percentage, a number or ratio as a fraction of 100. Related signs include the permille (per thousand) sign ‰ and the permyriad (per ten thousand) sign ‱ (also known as a basis point), which indicate that a number is divided by one thousand or ten thousand, respectively.

  9. Greater-than sign - Wikipedia

    en.wikipedia.org/wiki/Greater-than_sign

    The greater-than sign is a mathematical symbol that denotes an inequality between two values. The widely adopted form of two equal-length strokes connecting in an acute angle at the right, >, has been found in documents dated as far back as 1631. [1]