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  2. Help:Using the Wayback Machine - Wikipedia

    en.wikipedia.org/wiki/Help:Using_the_Wayback_Machine

    The Wayback Machine is a service which can be used to cite archived copies of web pages used by articles. This is useful if a web page has changed, moved, or disappeared; links to the original content can be retained.

  3. Logical machine - Wikipedia

    en.wikipedia.org/wiki/Logical_machine

    A logical abacus is constructed to show all the possible combinations of a set of logical terms with their negatives, and, further, the way in which these combinations are affected by the addition of attributes or other limiting words, i.e., to simplify mechanically the solution of logical problems.

  4. Help:Cite errors - Wikipedia

    en.wikipedia.org/wiki/Help:Cite_errors

    This normally shows a cite error, unless it is the last footnote on the page. Normally, this would then suppress the <references /> tag, generating an error, but the message for a missing <references /> tag is suppressed on non-article pages. refTools will catch this problem.

  5. Abaqus - Wikipedia

    en.wikipedia.org/wiki/Abaqus

    ^* The more complex the contacts become, the more repetitive calculations ABAQUS/Standard has to solve, and the more time and disk space needed; ABAQUS Explicit is the optimal choice in this case ^** Like static elements (see the picture), dynamic elements, thermal elements and electrical elements ^ ^*** Steady, Static and Constant loads are ...

  6. AOL Mail for Verizon Customers - AOL Help

    help.aol.com/products/aol-mail-verizon

    AOL Mail welcomes Verizon customers to our safe and delightful email experience!

  7. Fix problems signing into your AOL account - AOL Help

    help.aol.com/articles/help-signing-in

    If that doesn't fix the problem, try these steps and attempt to sign in after each one: Clear your browser's cookies. Quit and then restart your browser. Use a different supported web browser. Try signing into a different sign-in page, like our Aol.com sign-in page or the AOL Mail sign-in page.

  8. Abacus - Wikipedia

    en.wikipedia.org/wiki/Abacus

    An abacus (pl.: abaci or abacuses), also called a counting frame, is a hand-operated calculating tool which was used from ancient times in the ancient Near East, Europe, China, and Russia, until the adoption of the Hindu–Arabic numeral system. [1] An abacus consists of a two-dimensional array of slidable beads (or similar objects). In their ...

  9. Mental abacus - Wikipedia

    en.wikipedia.org/wiki/Mental_abacus

    The abacus system of mental calculation is a system where users mentally visualize an abacus to carry out arithmetical calculations. [1] No physical abacus is used; only the answers are written down. Calculations can be made at great speed in this way.