fɔːɹ , ðə hˈɑːɹɹɪʃtʃˈʌndɹə ˈaɪsəmˌoːɹfɪzəm sˈɛz ɪz ˌaɪsəmˈoːɹfɪk tʊ ɐ pˌɑːlɪnˈoʊmɪəl ˈældʒᵻbɹə ʌv wˈeɪlɪnvˈɛɹiənt pˌɑːlɪnˈoʊmɪəlz ɪn tˈuː vˈɛɹɪəbəlz sˈɪns ðə kˈɑːɹtən sˈʌbɐldʒˌɛbɹə ɪz tˈuːdᵻmˈɛnʃənəl.
For , the Harish-Chandra isomorphism says  is isomorphic to a polynomial algebra of Weyl-invariant polynomials in two variables  (since the Cartan subalgebra is two-dimensional).