@unpublished{calmes:hal-00922509, TITLE = {{Push-pull operators on the formal affine Demazure algebra and its dual}}, AUTHOR = {Calm{\`e}s, Baptiste and Zainoulline, Kirill and Zhong, Changlong}, URL = {https://univ-artois.hal.science/hal-00922509}, NOTE = {25 pages}, YEAR = {2013}, MONTH = Nov, HAL_ID = {hal-00922509}, HAL_VERSION = {v1}, }