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  2. Double counting (proof technique) - Wikipedia

    en.wikipedia.org/wiki/Double_counting_(proof...

    Where double counting involves counting one set in two ways, bijective proofs involve counting two sets in one way, by showing that their elements correspond one-for-one. The inclusion–exclusion principle , a formula for the size of a union of sets that may, together with another formula for the same union, be used as part of a double ...

  3. AOL Mail

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    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!

  4. Proofs of quadratic reciprocity - Wikipedia

    en.wikipedia.org/wiki/Proofs_of_quadratic...

    Count the number of proofs to the law of quadratic reciprocity given thus far in this book and devise another one. Ireland, Kenneth; Rosen, Michael (1990), A Classical Introduction to Modern Number Theory, Graduate Texts in Mathematics, Vol. 84 (2nd ed.), New York: Springer, ISBN 0-387-97329-X

  5. Student's t-test - Wikipedia

    en.wikipedia.org/wiki/Student's_t-test

    A two-sample location test of the null hypothesis such that the means of two populations are equal. All such tests are usually called Student's t -tests , though strictly speaking that name should only be used if the variances of the two populations are also assumed to be equal; the form of the test used when this assumption is dropped is ...

  6. Use filters to sort and organize messages in AOL Mail

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    1. Click the Settings icon | select More Settings. 2. Click Filters. 3. Click Add new filters. 4. Enter the filter name, set the filter rules, and choose or create a folder for the emails.

  7. Conditional loop - Wikipedia

    en.wikipedia.org/wiki/Conditional_loop

    The following is a C-style While loop.It continues looping while x does not equal 3, or in other words it only stops looping when x equals 3.However, since x is initialized to 0 and the value of x is never changed in the loop, the loop will never end (infinite loop).

  8. Transfer length method - Wikipedia

    en.wikipedia.org/wiki/Transfer_length_method

    Two boundary conditions can be obtained by defining the voltage as well as the current at the beginning of a metallic pad area as and respectively. In a formal manner this means that V ( x = 0 ) = V 0 {\displaystyle V(x=0)=V_{0}} and I ( x = 0 ) = I 0 {\displaystyle I(x=0)=I_{0}} when using the settings in the figure in this section.

  9. AP Computer Science Principles - Wikipedia

    en.wikipedia.org/wiki/AP_Computer_Science_Principles

    Assessment for AP Computer Science Principles is divided into two parts: a Create Performance Task due during the course, as well as an AP exam. [2] AP Computer Science Principles examines a variety of computing topics on a largely conceptual level, and teaches procedural programming. In the Create "Through-Course Assessment", students must ...