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  2. Social login - Wikipedia

    en.wikipedia.org/wiki/Social_login

    Social login is a form of single sign-on using existing information from a social networking service such as Facebook, Twitter or Google, to login to a third party website instead of creating a new login account specifically for that website. It is designed to simplify logins for end users as well as provide more reliable demographic ...

  3. Confidence interval - Wikipedia

    en.wikipedia.org/wiki/Confidence_interval

    A simple example arises where the quantity to be estimated is the population mean, in which case a natural estimate is the sample mean. Similarly, the sample variance can be used to estimate the population variance. A confidence interval for the true mean can be constructed centered on the sample mean with a width which is a multiple of the ...

  4. Emotional Abuse: What It Is and Signs to Watch For - Healthline

    www.healthline.com/health/signs-of-mental-abuse

    Express those limits to the person using abuse tactics and stick to them. You might say, for example, “If you call me names, I’ll go home,” or, “If you start teasing me in public, I’ll ...

  5. What Is Verbal Abuse? 22 Examples, Patterns to Watch For, What to

    www.healthline.com/health/mental-health/what-is...

    Abuse comes in many forms. It doesn't have to be physical, like in verbal abuse. When someone repeatedly uses words to demean, frighten, or control someone, that's verbal abuse. It can happen ...

  6. S-matrix theory - Wikipedia

    en.wikipedia.org/wiki/S-matrix_theory

    The principle behind the Regge theory hypothesis (also called analyticity of the second kind or the bootstrap principle) is that all strongly interacting particles lie on Regge trajectories. This was considered the definitive sign that all the hadrons are composite particles, but within S -matrix theory, they are not thought of as being made up ...

  7. C (programming language) - Wikipedia

    en.wikipedia.org/wiki/C_(programming_language)

    For example, the GNU Multiple Precision Arithmetic Library, the GNU Scientific Library, Mathematica, and MATLAB are completely or partially written in C. Many languages support calling library functions in C, for example, the Python-based framework NumPy uses C for the high-performance and hardware-interacting aspects.

  8. Less-than sign - Wikipedia

    en.wikipedia.org/wiki/Less-than_sign

    The less-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 left, <, has been found in documents dated as far back as the 1560s.

  9. Sign (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Sign_(mathematics)

    The plus and minus symbols are used to show the sign of a number.. In mathematics, the sign of a real number is its property of being either positive, negative, or 0.Depending on local conventions, zero may be considered as having its own unique sign, having no sign, or having both positive and negative sign.