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  2. Second fundamental form - Wikipedia

    en.wikipedia.org/wiki/Second_fundamental_form

    and the second fundamental form at the origin in the coordinates (x,y) is the quadratic form + +. For a smooth point P on S, one can choose the coordinate system so that the plane z = 0 is tangent to S at P, and define the second fundamental form in the same way.

  3. Second Amendment to the United States Constitution

    en.wikipedia.org/wiki/Second_Amendment_to_the...

    Therefore, Bogus argues, in a compromise with the slave states, and to reassure Patrick Henry, George Mason and other slaveholders that they would be able to keep their slave control militias independent of the federal government, James Madison (also slave owner) redrafted the Second Amendment into its current form "for the specific purpose of ...

  4. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  5. Educational stage - Wikipedia

    en.wikipedia.org/wiki/Educational_stage

    Secondary schooling usually begins at age 13. Secondary schools offer education for a total of five years, starting with Form 1 and finishing at Form 5. Forms 1–3 are grouped together into the "Lower Form" and Forms 4 and 5 are considered the "Upper Form". Students in Form 3 will have to sit for their second national exam, the PT3. They are ...

  6. List of valid argument forms - Wikipedia

    en.wikipedia.org/wiki/List_of_valid_argument_forms

    Another form of argument is known as modus tollens (commonly abbreviated MT). In this form, you start with the same first premise as with modus ponens. However, the second part of the premise is denied, leading to the conclusion that the first part of the premise should be denied as well. It is shown below in logical form. If A, then B Not B

  7. Power of two - Wikipedia

    en.wikipedia.org/wiki/Power_of_two

    Two to the power of n, written as 2 n, is the number of values in which the bits in a binary word of length n can be set, where each bit is either of two values. A word, interpreted as representing an integer in a range starting at zero, referred to as an "unsigned integer", can represent values from 0 (000...000 2) to 2 n − 1 (111...111 2) inclusively.

  8. Quadratic function - Wikipedia

    en.wikipedia.org/wiki/Quadratic_function

    In mathematics, a quadratic function of a single variable is a function of the form [1] = + +,,where ⁠ ⁠ is its variable, and ⁠ ⁠, ⁠ ⁠, and ⁠ ⁠ are coefficients.The expression ⁠ + + ⁠, especially when treated as an object in itself rather than as a function, is a quadratic polynomial, a polynomial of degree two.

  9. Second-order logic - Wikipedia

    en.wikipedia.org/wiki/Second-order_logic

    The second-order logic without these restrictions is sometimes called full second-order logic to distinguish it from the monadic version. Monadic second-order logic is particularly used in the context of Courcelle's theorem, an algorithmic meta-theorem in graph theory. The MSO theory of the complete infinite binary tree is decidable.