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  2. 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!

  3. List of SMTP server return codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SMTP_server_return...

    A server capable of replying with an Enhanced Status Code MUST preface (prepend) the Text Part of SMTP Server responses with the Enhanced Status Code followed by one or more spaces. For example, the "221 Bye" reply (after QUIT command) MUST be sent as "221 2.0.0 Bye" instead. [1]

  4. Learning with errors - Wikipedia

    en.wikipedia.org/wiki/Learning_with_errors

    The LWE problem was introduced by Oded Regev in 2005 [3] (who won the 2018 Gödel Prize for this work); it is a generalization of the parity learning problem. Regev showed that the LWE problem is as hard to solve as several worst-case lattice problems.

  5. HiGHS optimization solver - Wikipedia

    en.wikipedia.org/wiki/HiGHS_optimization_solver

    Its origins can be traced back to late 2016, when Ivet Galabova combined her LP presolve with Julian Hall's simplex crash procedure and Huangfu Qi's dual simplex solver to solve a class of industrial LP problems faster than the best open-source solvers at that time.

  6. Fix problems sending AOL Mail

    help.aol.com/articles/aol-mail-troubleshooting

    If your Mail settings don't have Rich Text or HTML enabled, you could have problems with viewing images in forwarded emails. These settings can be enabled from the Mail Settings page. Send image as an attachment: If you've sent an image in an email, but your recipient didn't receive it there may have been a problem with the way the file was sent.

  7. List of unsolved problems in mathematics - Wikipedia

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

    Prizes are often awarded for the solution to a long-standing problem, and some lists of unsolved problems, such as the Millennium Prize Problems, receive considerable attention. This list is a composite of notable unsolved problems mentioned in previously published lists, including but not limited to lists considered authoritative, and the ...

  8. CAPTCHA - Wikipedia

    en.wikipedia.org/wiki/Captcha

    According to an article by Ahn, Blum and Langford, [28] "any program that passes the tests generated by a CAPTCHA can be used to solve a hard unsolved AI problem." [29] They argue that the advantages of using hard AI problems as a means for security are twofold. Either the problem goes unsolved and there remains a reliable method for ...

  9. HTTP 502 - Wikipedia

    en.wikipedia.org/wiki/HTTP_502

    According to the specification, the 502 status code indicates that the server, while acting as a gateway or proxy, received an invalid response from an upstream ...