Notations Y

$y_{\NVar{\nu},\NVar{m}}$: zeros of the Bessel function $Y_{\nu}\left(x\right)$ ; §10.21(i)
${y^{\prime}_{\NVar{\nu},\NVar{m}}}$: zeros of the Bessel function derivative $Y_{\nu}'\left(x\right)$ ; §10.21(i)
$y_{\NVar{n}}(\NVar{x})=y_{n}\left(x;2\right)$: other notation; (18.34.2)
(with $y_{\NVar{n}}\left(\NVar{x};\NVar{a}\right)$ : Bessel polynomial)
$y_{\NVar{n}}(\NVar{z})=\mathsf{y}_{n}\left(z\right)$: notation used by Abramowitz and Stegun (1964); §10.1
(with $\mathsf{y}_{\NVar{n}}\left(\NVar{z}\right)$ : spherical Bessel function of the second kind)
$\mathsf{y}_{\NVar{n}}\left(\NVar{z}\right)$: spherical Bessel function of the second kind; (10.47.4)
$\widetilde{Y}_{\NVar{\nu}}\left(\NVar{x}\right)$: Bessel function of imaginary order; (10.24.2)

$Y_{\NVar{\nu}}\left(\NVar{z}\right)$: Bessel function of the second kind; (10.2.3)
$Y_{{\NVar{l}},{\NVar{m}}}\left(\NVar{\theta},\NVar{\phi}\right)$: spherical harmonic; (14.30.1)
$y_{\NVar{n}}\left(\NVar{x};\NVar{a}\right)$: Bessel polynomial; (18.34.1)
$Y_{\NVar{l}}^{\NVar{m}}\left(\NVar{\theta},\NVar{\phi}\right)$: surface harmonic of the first kind; (14.30.2)
$y_{\NVar{n}}(\NVar{x};\NVar{a},\NVar{b})=y_{n}\left(2x/b;a\right)$: other notation; (18.34.3)
(with $y_{\NVar{n}}\left(\NVar{x};\NVar{a}\right)$ : Bessel polynomial)