Anonymous ID: 6eb551 Feb. 9, 2018, 5:11 p.m. No.319484   🗄️.is 🔗kun   >>9502

The staurogram (⳨), also monogrammatic cross or tau-rho,[1] is a ligature composed of a superposition of the letters tau (Τ) and rho (Ρ).

 

Rho is classed as a liquid consonant (together with lambda and sometimes the nasals mu and nu), which has important implications for morphology. In both Ancient and Modern Greek, it represents a trilled or tapped r.

 

In polytonic orthography, a rho at the beginning of a word is written with a rough breathing, equivalent to h (ῥ rh), and a double rho within a word is written with a smooth breathing over the first rho and a rough breathing over the second (ῤῥ rrh). That apparently reflected an aspirated or voiceless pronunciation in Ancient Greek, which led to the various Greek-derived English words starting with rh or contain rrh.

 

Well. I'll be.

Anonymous ID: 6eb551 Feb. 9, 2018, 5:13 p.m. No.319501   🗄️.is 🔗kun   >>9562

The IX monogram or XI monogram is a type of early Christian monogram looking like the spokes of a wheel, sometimes within a circle.[1]

 

The IX monogram is formed by the combination of the letter "I" or Iota for IHSOYS (Ιησους, Jesus in Greek) and "X" or Chi for XPISTOS (Χριστος, Christ in Greek). The spokes can also be stand-alone, without the circle. These monograms can often be found as ancient burial inscriptions.[2][3]

Anonymous ID: 6eb551 Feb. 9, 2018, 5:21 p.m. No.319553   🗄️.is 🔗kun

The characters ρ and ϱ are also conventionally used outside the Greek alphabetical context in science and mathematics.

 

In the physical sciences to represent:Densities: mass density, air density or charge density (ρ)Resistivity (ρ)Rho meson (ρ+, ρ−, ρ0)General quantum statesHammett Equation, ρ is used to represent the reaction constant, this is independent of the position and nature of the substituents of the benzene ring.In mathematics to represent:A length coordinate in polar, cylindrical, spherical, and toroidal coordinate systems, and toroidal and poloidal coordinates of the Earth's magnetic field.The correlation coefficient of a population parameterThe spectral radius of a matrix {\displaystyle A} denoted as {\displaystyle \rho (A)}The plastic numberThe 'prime constant' numberThe sensitivity to interest rates of a pricing functionThe expected return of a given policy ({\displaystyle \pi }) in reinforcement learning, denoted {\displaystyle \rho ^{\pi }}In economics to represent the discount rate of future pence cash flowsIn molecular biology to represent the Rho protein responsible for termination of RNA synthesis. In such occasions, it is often represented as ϱ ("rho symbol" U+03F1), to avoid confusion with the Latin letter pIn ecology to represent the population damping ratio where ρ = λ1 / |λ2|.In computer programmingFor LaTeX, the symbols are \rho ({\displaystyle \rho }), and \varrho ({\displaystyle \varrho }) (note: \Rho is not defined by default)The lower-case rho "ρ" has a special meaning in the APL programming languageIn statistics to represent Spearman's rank correlation coefficient, commonly known as Spearman's rhoIn options theory to represent the rate of change of a portfolio with respect to interest rates