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VIDEO LIBRARY |
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The model surface method: a new step V. K. Beloshapka Lomonosov Moscow State University, Faculty of Mechanics and Mathematics |
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Abstract: There were several steps of construction of the model surface method. At the beginning, H. Poincare used as a model surface the 3-dimensional sphere, then J. Moser used hyperquadrics. Further appeared quadrics of higher codimension, then totally nondegenerate model surfaces were introduced. In 2020, the theory made the next step: model surfaces of an arbitrary Bloom-Graham type were considered. This was crucial for the general appearance of the theory and stated many new questions. Language: English Website: https://zoom.us/j/9544088727?pwd=RnRYeUcrZlhoeVY3TnRZdlE0RUxBQT09 * ID: 954 408 8727, password: residue |