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what is known? even talking about efficiency relatively to the complexity of the computation of the domain itself?

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I believe you should ask for help in forming a good question for this forum. Ask a colleague to help you with the spelling as well as the content. You might even ask for help on Gerhard "Ask Me About System Design" Paseman, 2012.10.09 – Gerhard Paseman Oct 9 '12 at 17:17
I believe you should ask for help in communicating with people. Maybe a colleague could assist? – Lilach Leibovich Oct 12 '12 at 22:31
@Lilach: Being snarky will get your question closed even faster. – Igor Rivin Oct 12 '12 at 23:55
Thanks for the assistance, Igor. Lilach, if facility with English is not an issue, perhaps there is some part of the "How To Ask" guide that is. If you want help, I again recommend Gerhard "My Apologies For Guessing Wrong" Paseman, 2012.10.12 – Gerhard Paseman Oct 13 '12 at 3:41
@Igor: See if I care... @Gerhard: 10x, but how did you get the impression that I am looking for such? anyhow, you may fix my keyboard, if we are already talking ;-) – Lilach Leibovich Oct 13 '12 at 12:45

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