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Table 1 jI−accuracy measure for any nonempty subset A of X

From: Approximations of some near open sets in ideal topological spaces

AXηαI(A)ηSI(A)ηPI(A)ηγ(A)ηβI(A)\( {\eta}_{\bigwedge_{\upbeta}I}(A) \)
{a}000000
{b}000001
{c}000000
{d}001/31/21/21/2
{e}1/31/21/31/21/21/2
{a, b}000001/2
{a, c}000000
{a, d}001/41/31/31/3
{a, e}2/312/3111
{b, c}000001/2
{b, d}001/31/32/32/3
{b, e}1/32/31/32/32/32/3
{c, d}1/212/3111
{c, e}1/51/51/41/41/31/3
{d, e}1/51/52/52/52/51/2
{a, b, c}000001/3
{a, b, d}001/41/41/21/2
{a, b, e}2/312/3111
{a, c, d}1/22/31/22/32/32/3
{a, c, e}2/52/51/21/22/32/3
{a, d, e}2/52/53/53/53/53/4
{b, c, d}1/212/3111
{b, c, e}1/52/51/41/21/21/2
{b, d, e}1/52/53/53/53/53/5
{c, d, e}3/53/53/53/53/53/4
{a, b, c, d}1/23/41/23/43/43/4
{a, b, c, e}2/53/51/23/43/43/4
{a, b, d, e}2/53/54/54/54/54/5
{a, c, d, e}4/54/54/54/54/51
{b, c, d, e}4/54/54/54/54/54/5
U111111