TY JOUR TI Ludwig Wittgenstein on the Essence of Tautology: the Evolution of the View KW philosophy of language KW western philosophy of the twentieth century KW Ludwig Wittgenstein KW tautology KW contradiction KW sentence KW symbol KW rule KW meaning JO The Journal of Philological Studies AU Sosnin, V.A. AU Kudrin, S.K. PY 2021 IS 6 PB INFRA-M Academic Publishing LLC.