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  1. lpetrich

    Language as a Clue to Prehistory

    ...Neolithic technology and Middle Eastern domestic animals and plants. Metals? JB and Alexei Kassian note at least 6 Proto-North-Caucasian terms: “*ɦĕrVcwĭ ‘silver’, *lŏʒV ̅ ‘a bright metal’, *rĕwcwi ‘red copper ; gold’, *riƛ(w)e ‘brass; gold’, *ṭɨš(w)ɨ ‘lead’, *ṭV ̆ tV(wV) ‘silver ; gold’...
  2. lpetrich

    Language as a Clue to Prehistory

    Indeed one can. Neolithic Europe - I'll normalize the dates to BP, where "present" is 2000 CE. Basque: Cardium pottery (N Mediterranean, 8,400 BP - 7,500 BP) < Neolithic Greece (9,000–8,500 BP - 5,200 BP) , Pre-Pottery Neolithic B (Fertile Crescent, 10,800 BP - 8,500 BP) File:Expansion of...
  3. lpetrich

    Language as a Clue to Prehistory

    I agree. It's remarkable how well-preserved 1x *m-, 2x *t-, "that" *t-, "who?" *k- is over northern Eurasia. Indeed there are. JB lists a LOT of them in (4) The Anthropological Context of Euskaro-Caucasian | John D Bengtson - Academia.edu Domestic animals: bovine, sheep, goat, pig Dairying...
  4. lpetrich

    Language as a Clue to Prehistory

    JB to another responder: Or in non-laryngeal terms: *(ë)no-mn -- I've decided to write schwa as ë -- Wiktionary has h1nómn. That's a problem with IE *nomn ~ U *nimi -- the m in the IE form is part of a noun-forming suffix *-mn -- Latin -men (-min-), Greek -ma (-mat-), Sanskrit -ma (-man-)...
  5. lpetrich

    Language as a Clue to Prehistory

    Sergei Starostin's big list of IE-NC borrowings was once published in Mother Tongue. I remember his argument that the borrowings went from NC to IE because IE has a simpler phonology than NC and that the NC forms covered the full range. He cited Russian borrowings into NC langs which use a...
  6. lpetrich

    Language as a Clue to Prehistory

    ...be true of distant cognates, and that's been a big problem for Altaic: how much is inherited and how much is borrowed? A common opinion is that *every* similar-looking word is borrowed, even the pronouns. I think that that's in excess, and that the Altaic families have a core of common...
  7. lpetrich

    Language as a Clue to Prehistory

    ...roughly 26 - 20 ky BP, and the Holocene Epoch began at 12 ky BP -- the time in between I like to call the terminal Pleistocene. "Name"? Proto-AA *sim -- Proto-Semitic *shim- -- Egyptian rin -- Proto-Berber *isem -- Proto-Chadic *s3m > Hausa suna -- Cushitic: Somali magac -- doesn't quite...
  8. lpetrich

    Very high motion star?

    Fixing that last one: dsq = Square degree = square degrees in the sky Since quasars are not very bright in observation, one measures their positions relative to catalogued stars and uses those measurements to find those stars' positions relative to an inertial, nonrotating frame. Quasars are...
  9. lpetrich

    IRS makes free online tax preparation permanent, and for all states and DC

    ...Here's who qualifies for free tax filing through the IRS this season (the earlier list omitted Washington State) To the 12 states of this year (*) were added 12 more states: AK, *AZ, *CA, CT, *FL, ID, KS, *MA, MD, ME, NC, *NH, NJ, NM, *NV, *NY, OR, PA, *SD, *TN,* TX, *WA, WI, *WY. For the...
  10. lpetrich

    A dumb question

    Our physics intuitions tend to be Aristotelian: that every objects tries to find its "natural" place and motion. But there are various things that can affect the Earth's rotation: Tidal drag - by far, the most significant Drag by the solar wind on the Earth's magnetosphere Electromagnetic...
  11. lpetrich

    RNA self replicates

    I'd have to have more specific references. I'm sure that I can interpret the abstracts of paywalled ones. Did any of the papers describe any of the raw materials that were used in the experiments described in those papers? Were they RNA nucleotides? (phosphate) - (ribose) - (nucleobase) Or...
  12. lpetrich

    Inscribed circle problem

    ChatGPT seems to me to be hopelessly glib, talking a lot but not saying very much.
  13. lpetrich

    Inscribed circle problem

    ...py2 = 1 Inner circle: (px-cx)2 + (py-cy)2 = py2 Tangent condition: {-py, px} . eps2 . {-(py-cy), (px-cx)} = 0 where eps2 is the 2D antisymmetric symbol {{0,1},{-1,0}}. The solution: px = 2*cx/(1+cx2) py = (1-cx2)/(1+cx2) cy = (1/2)*(1-cx2) The center of the inner circle is thus on a...
  14. lpetrich

    Are there really infinite transcendental numbers?

    ...Zeta Function Zeros -- from Wolfram MathWorld The trivial ones are for s = -2, -4, -6, -8, -10, ... The nontrivial ones have form s = sr + i*si, where 0 < sr < 1. The Riemann hypothesis states that all such zeros have sr = 1/2. Riemann hypothesis - Riemann Hypothesis -- from Wolfram...
  15. lpetrich

    Food preservation

    Hardtack - dense biscuits / crackers - Salt pork - Corned beef - salt beef These were common rations for armies and navies in the 17th, 18th, & 19th cys. Another modern technique is Canning - sealing food in airtight containers like metal cans. The first canning was done in 1809, for...
  16. lpetrich

    Making the US Senate More Representative

    Making the Senate proportional by population, like the House, is an interesting exercise. For that, I decided to use the Huntington-Hill highest-averages algorithm as my baseline one. The overall number of Senators is twice the number of states, but each state may have more or fewer Senators...
  17. lpetrich

    Making the US Senate More Representative

    The tables did not get fixed after the move from vBulletin to XenForo. I will fix them. List of electoral systems by country Polity Dist List L/D Germany 299 299 1 New Zealand 72 120 1.67 Thailand 350 150 0.43 Lesotho 80 40 0.5 Bolivia 70 60 0.86 Scotland...
  18. lpetrich

    Very high motion star?

    For position, the barycenter of the Solar System. For direction, quasars, because they are the farthest objects that can be observed without much difficulty. The one with the highest apparent visual luminosity, 3C 273, has visual magnitude +12.9. Others are not quite as bright in visible light...
  19. lpetrich

    Desantis Declares Himself Emperor Of Florida?

    Florida officials investigate voters who signed abortion ballot initiative | Florida | The Guardian - "Activists say investigation by agency set up by Ron DeSantis into whether fraud took place is voter intimidation"
  20. lpetrich

    A simple(?) problem involving small sets of integers

    Of solutions known to me, the only self-inverses are: range(1) = {1}, range(2) = {1,2}, and {2,3,4,6}
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