Steger Tim, Trojan Bartosz
1Matematica, Università degli Studi di Sassari, Via Piandanna 4, 07100 Sassari, Italy.
2Wydział Matematyki, Politechnika Wrocławska, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland.
J Geom Anal. 2018;28(2):1122-1150. doi: 10.1007/s12220-017-9856-6. Epub 2017 May 8.
For the natural two-parameter filtration on the boundary of a triangle building, we define a maximal function and a square function and show their boundedness on for . At the end, we consider boundedness of martingale transforms. If the building is of , then can be identified with -adic Heisenberg group.
对于三角形建筑边界上的自然双参数滤子,我们定义了一个极大函数和一个平方函数,并证明了它们在 时在 上的有界性。最后,我们考虑鞅变换的有界性。如果建筑是 型的,那么 可以与 -adic 海森堡群等同。