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Look up erf in Wiktionary, the free dictionary. Erf or ERF may refer to: Enerplus, a North American energy producer whose stock is listed as ERF under the...

function), often denoted by erf, is a function defined as: erf ⁡ z = 2 π ∫ 0 z e − t 2 d t . {\displaystyle \operatorname {erf} z={\frac {2}{\sqrt {\pi }}}\int...

(Phase One), 3FR (Hasselblad), DCR, K25, KDC (Kodak), CRW, CR2, CR3 (Canon), ERF (Epson), MEF (Mamiya), MOS (Leaf), NEF NRW (Nikon), ORF (Olympus), PEF (Pentax)...

Keith Erf is an American politician who is a Republican Party member of the New Hampshire House of Representatives. In the chamber, he is vice chair of...

an erf (pl. erven) is the legal term used in Namibia, South Africa and Eswatini to describe a piece of land registered in a deeds registry as an erf, lot...

(DVB-C). "ERF GlobalHope – Hoffnung in die Welt senden | ERF.de". ERF Medien. "ERF Medien Deutschland zieht positive Bilanz". GLAUBE.at. "ERF 1 - Satellite...

ERF was a British truck manufacturer established in 1933 by Edwin Richard Foden, from whose initials the company was named. Its factory in Middlewich...

An ERF damper or electrorheological fluid damper, is a type of quick-response active non-linear damper used in high-sensitivity vibration control. Zhu...

ETS domain-containing transcription factor ERF is a protein that in humans is encoded by the ERF gene. GRCh38: Ensembl release 89: ENSG00000105722 – Ensembl...

The Newhaven ERF (Energy Recovery Facility) is an incinerator, in the town of Newhaven in the English county of East Sussex, for the treatment of up to...

2 erf − 1 ⁡ ( F ) {\displaystyle Q(F;\sigma )=\sigma {\sqrt {2}}\operatorname {erf} ^{-1}(F)} where 0 ≤ F ≤ 1 {\displaystyle 0\leq F\leq 1} and erf −...

by: Proportion = erf ⁡ ( z 2 ) {\displaystyle {\text{Proportion}}=\operatorname {erf} \left({\frac {z}{\sqrt {2}}}\right)} where erf {\displaystyle \textstyle...

Fresnel that are used in optics and are closely related to the error function (erf). They arise in the description of near-field Fresnel diffraction phenomena...

}^{x}e^{-t^{2}/2}\,dt\,.} The related error function erf ⁡ ( x ) {\textstyle \operatorname {erf} (x)} gives the probability of a random variable, with...

Bryntirion Estate contains 28 erfs (properties). All the Bryntirion erven are owned by the Republic of South Africa. Erf 16 was the only privately owned...

is closely related to the error function erf, as D + ( x ) = π 2 e − x 2 erfi ⁡ ( x ) = − i π 2 e − x 2 erf ⁡ ( i x ) {\displaystyle D_{+}(x)={{\sqrt...

Marchwood ERF (or Marchwood Energy Recovery Facility) is a waste incineration plant in Marchwood, near Southampton, England. It is situated beside the...

( r ) = 1 4 π ε Q r erf ⁡ ( r 2 σ ) , {\displaystyle \varphi (r)={\frac {1}{4\pi \varepsilon }}{\frac {Q}{r}}\operatorname {erf} \left({\frac {r}{{\sqrt...

1+\operatorname {erf} {\Big (}{\frac {x}{\sqrt {2}}}{\Big )}\,{\Big ]},\quad x\in \mathbb {R} ,\,} where erf ⁡ ( ) , {\displaystyle \operatorname {erf} (),} is...

laws: c c ∗ = erf ⁡ ( x 2 D t ) {\displaystyle {\frac {c}{c*}}=\operatorname {erf} \left({\frac {x}{2{\sqrt {Dt}}}}\right)} where erf is the error function...