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Hi Anton! I'm looking again at 4D symmetries, and expanded this section in tetrahedron, isometries of irregular tetrahedra, basically added a table and 2D edge-colorings to show matching edges. So this gives me a clue that the same thing can be done for 4D. So far I've found no online evidence that anyone has attempted this, although it seems unlikely. Part of the problem is 4D point groups are rather a mess of notations, so even if the irregular 4-simplices were enumerated as permutations, their symmetry doesn't have a standard notation to share. I'm partial towards Coxeter_notation, but Coxeter didn't fully map them back to other notations, and Conway's efforts were equally incomplete. So the mess has been left at User:Tomruen/polychoral_groups. ANYWAY, if you see a way to enumerate unique symmetry diagrams of the 5-cell, like my colored diagrams for 8 tetrahedra, we could at least see what's there. How many could there be?! :) Tom Ruen (talk) 00:25, 16 May 2013 (UTC)
Hello. I came here just to mention that I tried to answer your two-year-old question regarding "Negative Low Tide" in the Talk pages of Wikipedia's Tides article. But I see from topics on this page that you are a mathematician. If I had known, I would have offered a much briefer and much more succinct attempt answer to your "tidal" question. Please forgive any condescension in the tone of my reply there. If you have any tidal modeling interests, the current mathematical model used in America for tide prediction is simply the sum of around 37 sine wave functions, whose amplitude, cyclic period, and phase lag is different for each very specific location. The list of sine wave parameters for all locations covered by NOAA are listed here. Selecting one place will reveal a list of sine wave parameter sets used to model the tide at that location. Furthermore, NOAA can provide some computer programs for tide prediction, although entirely without support and often written in ancient languages like FORTRAN (sadly, the language used for my Mathematics Ph.D. long ago). If it is the long term historical tidal data and analysis that interests you, there is that too at NOAA, but the world authority for that is formally assigned to the Permanent Service for Mean Sea Level in Liverpool, England. It is a part of the British Government National Oceanography Centre located within Southampton University on the south coast of England. Cheers, from ChrisJBenson (talk) 02:57, 29 June 2013 (UTC)
- I'm not a mathematician so much as a tinkerer with mathematical
- I too have written the odd bit of Fortran. Most recently, I amused myself by trying to translate the Fortran code from Robert Axelrod's iterated prisoner's dilemma tournament (1979?) into C or Python. Wasn't able to run it, mind you ... —Tamfang (talk) 03:28, 29 June 2013 (UTC)
- Axelrod and I both used to teach at UC Berkeley, though not at the same time. The winner of the original (truly non-communicating) 1979 Axelrod competition was the simplest strategy: If it's the first iteration, cooperate, else duplicate the opponent's last iteration. I have a fondness for "simplest wins", which (as an accidental but actual bias) appears to have been ignored in studies of this intersection between game theory (me), economics theory (my daughter at U Penn), and the real human Darwin-evolution of a co-operation bias. Feel free to delete this section and/or leave messages for me here. Cheers from ChrisJBenson (talk) 03:15, 2 July 2013 (UTC)
Hey Tamfang, an editor recently added a citation needed tag to a portion in the Restless (Buffy the Vampire Slayer) article, and I'd appreciative your assistance if you may. I originally thought that was already cited in the article, but I was wrong. And it got me thinking actually, is the "730" foreshadowing referring to Dawn's first appearance or Buffy's death or both? I couldn't think of another Buffy editor in which I've been in contact before, so I've turned to you. Any chance you could help, with a reference, or clarification. Thanks. Drovethrughosts (talk) 14:50, 2 July 2013 (UTC)
- Glory must use the Key on a specific date to open the portal; likely she knew that date before Graduation Day. Maybe that's what 730 is about, rather than Buffy's death in specific. It clearly isn't Dawn's arrival.
- If "Be back before dawn/Dawn" is foreshadowing, it's rather lame foreshadowing; it would be significant if something bad happens because Buffy is away when Dawn shows up, which ain't the case.
- Maybe there's a scholarly source, or a statement by Joss, that Tara's obscure remarks are foreshadowing (and of what); but without such authority, I'd make the sentence in question more tentative ("may foreshadow") and hope that satisfies Orangemike.
- It's handled better in the main body, where the coincidences are listed without expressly saying that they are intentional symbols. —Tamfang (talk) 17:45, 2 July 2013 (UTC)
- I readded it, per the Slayage source (paragraph 15), and a featurette found on the season 5 DVD ("Spotlight on Dawn"), in which both Whedon and David Fury comment on Little Miss Muffet being Dawn. As for the two years thing (the end of season 5, not the beginning), in "Restless" Tara says "That clock's completely wrong", because Dawn appears in the following episode. Again, per the Slayage source. Drovethrughosts (talk) 21:07, 3 July 2013 (UTC)
The WikiProject Report would like to focus on WikiProject Heraldry and Vexillology for a Signpost article. This is an excellent opportunity to draw attention to your efforts and attract new members to the project. Would you be willing to participate in an interview? If so, here are the questions for the interview. Just add your response below each question and feel free to skip any questions that you don't feel comfortable answering. Multiple editors will have an opportunity to respond to the interview questions, so be sure to sign your answers. If you know anyone else who would like to participate in the interview, please share this with them. Have a great day. –Mabeenot (talk) 15:51, 7 September 2013 (UTC)