Thursday, August 8, 2013

HOW to BECOME a GOOD THEORETICAL PHYSICIST(良い理論物理学者になる方法): Primary Mathematics

  • Natural number(自然数)
  • Integer(整数)
  • Rational number(fraction)(有理数)
  • Real number(実数)
  • Complex number(複素数)
  • Set theory(集合論)
  • Open set(開集合)
  • Compact space(コンパクト空間)
  • Topology(位相幾何学)
  • Algebraic equation(代数方程式)
  • Approximation technique(近似法)
  • Series expansion(級数展開)
  • Taylor series(テイラー展開)
  • Trigonometry(三角法)
  • Infinitesimal(無限小)
  • Differentiation(微分法)
  • Integration(積分法)
  • Differential equation(微分方程式)
  • Linear equation(一次方程式)
  • Fourier transform(フーリエ変換)
  • Convergent series(収斂級数)
  • Complex plane(複素平面)
  • Cauchy theorem(コーシーの定理)
  • Contour integration(閉曲線積分)
  • Gamma function(ガンマ関数)
  • Gaussian integral(ガウス積分)
  • Probability theory(確率論)
  • Partial differential equation(偏微分方程式)
  • Dirichlet boundary condition(ディリクレ境界条件) 
  • Neumann boundary conditions(ノイマン境界条件)

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Saturday, August 3, 2013

Katie Melua: Nine Million Bicycles

The Austronesian Language Family

All Modern Life on Earth Derived from Common Ancestor

A universal common ancestor is at least 10²⁸⁶⁰ times more probable than having multiple ancestors, Theobald calculates.
A model that had a single common ancestor and allowed for some gene swapping among species was even better than a simple tree of life. Such a scenario is 10³⁴⁸⁹ times more probable than the best multi-ancestor model, Theobald found. That's a 1 with 3,489 zeros after it.
Theobald's study does not address how many times life may have arisen on Earth. Life could have originated many times, but the study suggests that only one of those primordial events yielded the array of organisms living today.

Continue reading on Discovery News

LUA, LUCA, Cenancestor

Carl Woese

Carl Woese

Archaea

Friday, August 2, 2013

The Afroasiatic Language Family


Semitic, Berber, Cushitic, Chadic, Egyptian, Omotic

The Uralic Language Family


Finnic, Hungarian, Khanty, Mansi, Mari, Mordvinic, Permic, Sami, Samoyedic

The Sino-Tibetan Language Family


Sinitic, Tibeto-Burman

The Indo-European Language Family


Albanian, Anatolian, Armenian, Balto-Slavic, Celtic, Germanic, Hellenic, Indo-Iranian, Italic, Tocharian