Showing that operators follow SU(2) algebra

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graviton_10
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For two quantum oscillators, I have raising and lowering operators
gif.gif
and
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, and the number operator
Equation N = a_+ a_+^† + a_- a_-^† for the number operator in terms of raising and lowering operators a_+ and a_-.
. I need to check if operators below follow
Small rendered expression reading SU(2), the special unitary group of degree two, shown in plain text as the symbol for the group.
commutation relations.

Equation defining T sub plus as h-bar times a plus times a minus dagger, written in plain text as T+ = hbar a+ a-dagger (image shows T+ = ħa±†).


Equation: T_3 = (ħ/2)(a_+† a_+ − a_−† a_−), a LaTeX-rendered formula for an angular-momentum-type operator built from two oscillator number-like terms.


Now as far as I know, SU(2) algebra commutation relation is [T_1, T_2] = i ε^ijk T_3. So, should I just get T_1 and T_2 in terms of T_- and T_+ and then try to check if I get they follow the SU(2) commutation relation?
 
Just a pedantic comment but ##SU(2)## is a group, and ##\mathfrak{su}(2)## is an algebra.
 
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