an ▁lingu istics ▁at ▁the ▁Univers ities ▁of ▁Mun ich ▁and ▁Leipzig . ▁In ▁ 1 8 7 9 ▁he ▁passed ▁the ▁State ▁Ex am ▁( St a at sex amen ) ▁and ▁was ▁there after ▁active ▁as ▁a ▁school ▁teacher ▁until ▁ 1 8 9 1 . ▁In ▁ 1 8 8 3 ▁he ▁gain ▁his ▁doctor ate ▁( Prom otion ) ▁and ▁in ▁ 1 8 8 5 ▁his ▁H abil itation ▁in ▁Med ieval ▁and ▁Modern ▁Greek ▁phil ology . ▁From ▁ 1 8 9 7 ▁he ▁was ▁professor ▁of ▁Med ieval ▁and ▁Modern ▁Greek ▁Language ▁and ▁Liter ature ▁at ▁the ▁University ▁of ▁Mun ich ▁and ▁held ▁the ▁newly ▁created ▁Chair ▁of ▁By z antine ▁Studies , ▁the ▁first ▁professor ial ▁chair ▁in ▁this ▁subject ▁in ▁the ▁world . ▁Kr umb acher ▁founded ▁the ▁By z antin ische ▁Zeitschrift ▁( 1 8 9 2 ), ▁the ▁oldest ▁academic ▁journal ▁of ▁By z antine ▁Studies , ▁and ▁the ▁By z antin isches ▁Archiv ▁( 1 8 9 8 ). ▁His ▁collabor ator ▁at ▁the ▁time ▁was ▁Bo ž id ar ▁Pro ki ć , ▁the ▁ren owned ▁Bel grade ▁By z antin ist . ▁He ▁died ▁in ▁Mun ich ▁in ▁ 1 9 0 9 . ▁His ▁successor ▁as ▁Professor ▁of ▁By z antine ▁Studies ▁was ▁August ▁He isen berg , ▁father ▁of ▁phys ic ist ▁Werner ▁He isen berg . ▁ ▁His ▁most ▁important ▁work ▁is ▁Geschichte ▁der ▁by z antin ischen ▁Literatur ▁von ▁Justin ian ▁bis ▁zum ▁Ende ▁des