کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4661044 1344397 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
n-point sets and graphs of functions
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات هندسه و توپولوژی
پیش نمایش صفحه اول مقاله
n-point sets and graphs of functions
چکیده انگلیسی

We prove that, for every n⩾2, there exists an n-point set (a plane set which hits every line in exactly n points) that is homeomorphic to the graph of a function from R to R; for n⩾4, there exist both 0-dimensional and 1-dimensional examples. This raises the question (which we do not answer) of whether n-point sets for different n's could be homeomorphic.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Topology and its Applications - Volume 155, Issue 16, 1 October 2008, Pages 1804-1807