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  2. Wikipedia:Reference desk/Archives/Mathematics/July 2022

    en.wikipedia.org/.../Archives/Mathematics/July_2022

    Welcome to the Wikipedia Mathematics Reference Desk Archives The page you are currently viewing is a monthly archive index. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages.

  3. Wikipedia : WikiProject Mathematics/Reference resources

    en.wikipedia.org/.../Reference_resources

    Many valuable references in mathematics are beginning to migrate from inaccessible libraries to scans available on the web. This includes both classical publications and recent ones. The most common document formats are: HTML: Hypertext markup language, the standard web browsing format; PDF: Portable document format, the Adobe Acrobat format

  4. Bass diffusion model - Wikipedia

    en.wikipedia.org/wiki/Bass_diffusion_model

    Orbach (2022) [13] summarized the diffusion behavior at each portion of the p,q space and maps the extended (p,q) regions beyond the positive right quadrant (where diffusion is spontaneous) to other regions where diffusion faces barriers (negative p), where diffusion requires “stimuli” to start, or resistance of adopters to new members ...

  5. List of unsolved problems in mathematics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations.

  6. List of undecidable problems - Wikipedia

    en.wikipedia.org/wiki/List_of_undecidable_problems

    Rule 110 - most questions involving "can property X appear later" are undecidable. The problem of determining whether a quantum mechanical system has a spectral gap. [9] [10] Finding the capacity of an information-stable finite state machine channel. [11] In network coding, determining whether a network is solvable. [12] [13]

  7. How much an adoption costs and 4 ways to pay for it - AOL

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    The most affordable way to adopt a child is through the U.S. foster care system. On average, it costs under $2,800 to adopt a child from foster care.. Independent adoption through an attorney ...

  8. List of mathematics reference tables - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematics...

    List of mathematical topics; List of statistical topics; List of mathematical functions; List of mathematical theorems; List of mathematical proofs; List of matrices

  9. Major textbook publishers withdraw from Oklahoma as fight ...

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