I will explain basic concepts/problems of complex analysis in infinite dimensions, and survey the few approaches that are available to solve those problems.
@incollection{JEDP_1998____A8_0, author = {L\'aszl\'o Lempert}, title = {The {Cauchy-Riemann} equations in infinite dimensions}, booktitle = {}, series = {Journ\'ees \'equations aux d\'eriv\'ees partielles}, eid = {8}, pages = {1--8}, publisher = {Universit\'e de Nantes}, year = {1998}, zbl = {01808717}, mrnumber = {99k:46081}, language = {en}, url = {https://proceedings.centre-mersenne.org/item/JEDP_1998____A8_0/} }
László Lempert. The Cauchy-Riemann equations in infinite dimensions. Journées équations aux dérivées partielles (1998), article no. 8, 8 p. https://proceedings.centre-mersenne.org/item/JEDP_1998____A8_0/
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[L1] L. Lempert The Dolbeault complex in infinite dimensions I J. Amer. Math. Soc., to appear | Zbl
[L2] L. Lempert The Dolbeault complex in infinite dimensions II manuscript
[L3] L. Lempert The Dolbeault complex in infinite dimensions III in preparation
[L4] L. Lempert Approximation de fonctions holomorphes d'un nombre infini de variables manuscript
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