# Notations Y

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$\mathop{y_{\nu,m}\/}\nolimits$
zeros of the Bessel function $\mathop{Y_{\nu}\/}\nolimits\!\left(x\right)$; 10.21(i)
$\mathop{{y^{\prime}_{\nu,m}}\/}\nolimits$
zeros of the Bessel function derivative ${\mathop{Y_{\nu}\/}\nolimits^{\prime}}\!\left(x\right)$; 10.21(i)
$\mathop{Y_{\nu}\/}\nolimits\!\left(z\right)$
Bessel function of the second kind; (10.2.3)
$y_{n}(x)=\mathop{y_{n}\/}\nolimits\!\left(x;2\right)$
other notation; (18.34.2)
$\mathop{\widetilde{Y}_{\nu}\/}\nolimits\!\left(x\right)$
Bessel function of imaginary order; (10.24.2)
$y_{n}(z)=\mathop{\mathsf{y}_{n}\/}\nolimits\!\left(z\right)$
notation used by Abramowitz and Stegun (1964); 10.1
$\mathop{\mathsf{y}_{n}\/}\nolimits\!\left(z\right)$
spherical Bessel function of the second kind; (10.47.4)
$\mathop{y_{n}\/}\nolimits\!\left(x;a\right)$
Bessel polynomial; (18.34.1)
$\mathop{Y_{{l},{m}}\/}\nolimits\!\left(\theta,\phi\right)$
spherical harmonic; (14.30.1)
$\mathop{Y_{l}^{m}\/}\nolimits\!\left(\theta,\phi\right)$
surface harmonic of the first kind; (14.30.2)
$y_{n}(x;a,b)=\mathop{y_{n}\/}\nolimits\!\left(2x/b;a\right)$
other notation; (18.34.3)