• Thumbnail for I. F. Stone
    Known for his politically progressive views, Stone is best remembered for I. F. Stone's Weekly (1953–1971), a newsletter which the New York University journalism...
    69 KB (8,303 words) - 15:34, 12 September 2024
  • Thumbnail for I-F
    I-f (also Interr-Ference) is the stage name of Ferenc E. van der Sluijs, a Dutch producer and DJ based in The Hague. He is a former member of the Dutch...
    5 KB (446 words) - 13:18, 28 August 2024
  • Thumbnail for Fibonacci sequence
    of ∑ i = 1 n F i 2 = F n F n + 1 {\displaystyle \sum _{i=1}^{n}F_{i}^{2}=F_{n}F_{n+1}} to give ∑ i = 1 n F i 2 + F n + 1 2 = F n + 1 ( F n + F n + 1...
    86 KB (13,054 words) - 06:42, 4 November 2024
  • progression would be C–G–Am–F. Rotations include: I–V–vi–IV : C–G–Am–F V–vi–IV–I : G–Am–F–C vi–IV–I–V : Am–F–C–G IV–I–V–vi : F–C–G–Am The '50s progression...
    59 KB (2,886 words) - 18:45, 16 October 2024
  • still being designed as PL/I F was implemented, so some were omitted until later releases. PL/I RECORD I/O was shipped with PL/I F Release 2. The list processing...
    97 KB (11,975 words) - 01:17, 18 September 2024
  • If (redirect from I F)
    world sport governing bodies International Forum Design (iF), a society best known for its iF design awards Islamic Front (Syria), Sunni Islamist rebel...
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  • Thumbnail for Fourier transform
    Fourier transform (redirect from )
    i m e   d o m a i n   f = f R E + f R O + i   f I E + i   f I O ⏟ ⇕ FF     ⇕ F     ⇕ F     ⇕ F F r e q u e n c y   d o m a i n f ^ = f ^ R E + i  ...
    177 KB (21,017 words) - 21:39, 6 November 2024
  • Thumbnail for L'Hôpital's rule
    Thus lim i M ( x i ) ≤ lim i f ′ ( y i ) g ′ ( y i ) + ε i = lim i f ′ ( y i ) g ′ ( y i ) + lim i ε i = lim i f ′ ( y i ) g ′ ( y i ) {\displaystyle...
    36 KB (7,123 words) - 06:41, 7 November 2024
  • i ) = y i {\displaystyle F_{m+1}(x_{i})=F_{m}(x_{i})+h_{m}(x_{i})=y_{i}} or, equivalently, h m ( x i ) = y iF m ( x i ) {\displaystyle h_{m}(x_{i...
    28 KB (4,208 words) - 19:54, 2 October 2024
  • curve (fI or F-I curve) is the function that relates the net synaptic current (I) flowing into a neuron to its firing rate (F) Because the f-I curve only...
    2 KB (256 words) - 06:26, 7 July 2024
  • Isidore Frederick (I.F.) Hellmuth (1854–1944) was the first champion of what became the Canadian National Tennis Championship, now known as the Canadian...
    5 KB (453 words) - 21:33, 7 October 2024
  • Thumbnail for Gaussian quadrature
    stated as ∫ − 1 1 f ( x ) d x ≈ ∑ i = 1 n w i f ( x i ) , {\displaystyle \int _{-1}^{1}f(x)\,dx\approx \sum _{i=1}^{n}w_{i}f(x_{i}),} which is exact...
    42 KB (6,792 words) - 18:26, 15 October 2024
  • (1979). "I. F. Clarke". Science Fiction and Fantasy Literature. Vol. II. Wildside Press LLC. p. 855. ISBN 9780941028776. "Obituary: Professor I. F. Clarke"...
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  • {L}}\{f^{(n)}\}=s^{n}{\mathcal {L}}\{f\}-\sum _{i=1}^{n}s^{n-i}f^{(i-1)}(0)} Now we consider the following differential equation: ∑ i = 0 n a i f ( i ) (...
    3 KB (657 words) - 23:22, 6 February 2024
  • Thumbnail for Stalag I-F
    Stalag I-F was a German World War II prisoner-of-war camp located just north of the city of Suwałki in German-occupied Poland. Construction of the camp...
    3 KB (264 words) - 23:46, 15 October 2024
  • estimates, f ^ ( x ) {\displaystyle {\hat {f}}(x)} , obtained from a set of noisy observations y i {\displaystyle y_{i}} of the target f ( x i ) {\displaystyle...
    14 KB (2,309 words) - 02:32, 3 September 2024
  • then F 1 = F 2   ;     F 4 = F 5 = F 6 = 0   ;     F 11 = F 22   ;     F 44 = F 55   ;     F 13 = F 23   . {\displaystyle F_{1}=F_{2}~;~~F_{4}=F_{5}=F...
    8 KB (1,935 words) - 00:15, 9 December 2023
  • Thumbnail for Least squares
    constant, k, is given by k ^ = ∑ i F i y ii F i 2 . {\displaystyle {\hat {k}}={\frac {\sum _{i}F_{i}y_{i}}{\sum _{i}F_{i}^{2}}}.} We assume that applying...
    39 KB (5,586 words) - 05:22, 16 October 2024
  • Thumbnail for Tsiolkovsky rocket equation
    ⁡ m 0 m f = I sp g 0 ln ⁡ m 0 m f , {\displaystyle \Delta v=v_{\text{e}}\ln {\frac {m_{0}}{m_{f}}}=I_{\text{sp}}g_{0}\ln {\frac {m_{0}}{m_{f}}},} where:...
    25 KB (4,354 words) - 10:30, 28 October 2024
  • Thumbnail for Parabolic cylinder function
    {\displaystyle f(-ia,ze^{(1/4)\pi i})} is a solution of (B), and, by symmetry, f ( − i a , − z e ( 1 / 4 ) π i ) , f ( i a , − z e − ( 1 / 4 ) π i )  and  f ( i a...
    12 KB (2,655 words) - 14:46, 1 November 2024
  • Thumbnail for Entropy (information theory)
    \log(f(x_{i}))-\sum _{i=-\infty }^{\infty }f(x_{i})\Delta \log(\Delta ).} As Δ → 0, we have ∑ i = − ∞ ∞ f ( x i ) Δ → ∫ − ∞ ∞ f ( x ) d x = 1 ∑ i = − ∞ ∞ f ( x i ) Δ log...
    70 KB (10,021 words) - 04:30, 5 November 2024
  • 1 = y i + h f ( t i , y i ) {\displaystyle {\tilde {y}}_{i+1}=y_{i}+hf(t_{i},y_{i})} y i + 1 = y i + h 2 [ f ( t i , y i ) + f ( t i + 1 , y ~ i + 1 )...
    8 KB (1,278 words) - 09:07, 29 April 2024
  • I [ f 1 , f 2 , … , f m ] = ∫ x 0 x 1 L ( x , f 1 , f 2 , … , f m , f 1 ′ , f 2 ′ , … , f m ′ )   d x   ;     f i ′ := d f i d x {\displaystyle I[f_{1}...
    24 KB (4,840 words) - 13:41, 10 October 2024
  • The Saxon I F (one F) was a class of one 0-4-0 fireless steam locomotive built for the Royal Saxon State Railways. The locomotive was manufactured in 1917...
    3 KB (206 words) - 12:27, 5 August 2022
  • sequence 0 → F ( U ) → ∏ i F ( U i ) → res U i ∩ U j , U i − res U i ∩ U j , U j ∏ i , j F ( U i ∩ U j ) . {\displaystyle 0\to F(U)\to \prod _{i}F(U_{i})\xrightarrow...
    68 KB (11,057 words) - 03:33, 7 November 2024
  • Thumbnail for Regression analysis
    determinants of Y i {\displaystyle Y_{i}} or random statistical noise: Y i = f ( X i , β ) + e i {\displaystyle Y_{i}=f(X_{i},\beta )+e_{i}} Note that the...
    37 KB (5,116 words) - 06:21, 17 October 2024
  • Thumbnail for Gradient
    _{ij}={\partial f_{i}}/{\partial x_{j}}} . Explicitly J = [ ∂ f ∂ x 1 ⋯ ∂ f ∂ x n ] = [ ∇ T f 1 ⋮ ∇ T f m ] = [ ∂ f 1 ∂ x 1 ⋯ ∂ f 1 ∂ x n ⋮ ⋱ ⋮ ∂ f m ∂ x 1 ⋯ ∂ f m...
    38 KB (5,702 words) - 15:41, 18 October 2024
  • Thumbnail for Probability density function
    of them is given by f X i ( x i ) = f i ( x i ) ∫ f i ( x ) d x . {\displaystyle f_{X_{i}}(x_{i})={\frac {f_{i}(x_{i})}{\int f_{i}(x)\,dx}}.} This elementary...
    30 KB (4,938 words) - 11:35, 30 October 2024
  • Thumbnail for Lagrangian mechanics
    if ( q , t ) ∂ q i q ˙ i . {\textstyle {\frac {\partial f(\mathbf {q} ,t)}{\partial t}}+\sum _{i}{\frac {\partial f(\mathbf {q} ,t)}{\partial q_{i}}}{\dot...
    92 KB (14,503 words) - 19:45, 17 October 2024
  • t = f ( t , y ) . {\displaystyle {\frac {dy}{dt}}=f(t,y).} Explicit Runge–Kutta methods take the form y n + 1 = y n + h ∑ i = 1 s b i k i k 1 = f ( t...
    28 KB (5,237 words) - 05:55, 19 October 2024