Cutting Circles into Pseudo-segments and Improved Bounds for Incidences

نویسندگان

  • Boris Aronov
  • Micha Sharir
چکیده

We show that n arbitrary circles in the plane can be cut into O(n) arcs, for any ε > 0, such that any pair of arcs intersect at most once. This improves a recent result of Tamaki and Tokuyama [20]. We use this result to obtain improved upper bounds on the number of incidences between m points and n circles. An improved incidence bound is also obtained for graphs of polynomials of any constant maximum degree.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Cutting Circles into Pseudo-Segments and Improved Bounds for Incidences% and Complexity of Many Faces

We show that n arbitrary circles in the plane can be cut into O(n) arcs, for any ε > 0, such that any pair of arcs intersect at most once. This improves a recent result of Tamaki and Tokuyama [20]. We use this result to obtain improved upper bounds on the number of incidences between m points and n circles. An improved incidence bound is also obtained for graphs of polynomials of any constant m...

متن کامل

On the Complexity of Many Faces in Arrangements of Pseudo-Segments and of Circles

We obtain improved bounds on the complexity of m distinct faces in an arrangement of n pseudo-segments, n circles, or n unit circles. The bounds are worst-case optimal for unit circles; they are also worst-case optimal for the case of pseudo-segments, except when the number of faces is very small, in which case our upper bound is a polylogarithmic factor from the best-known lower bound. For gen...

متن کامل

Cutting algebraic curves into pseudo-segments and applications

We show that a set of n algebraic plane curves of constant maximum degree can be cut into O(n3/2 polylog n) Jordan arcs, so that each pair of arcs intersect at most once, i.e., they form a collection of pseudo-segments. This extends a similar (and slightly better) bound for pseudo-circles due to Marcus and Tardos. Our result is based on a technique of Ellenberg, Solymosi and Zahl that transform...

متن کامل

Improved Bounds for Incidences and Complexity of Many Faces in Arrangements of Circles and of Polynomial Arcs *

We derive improved upper bounds for the number of incidences between m points and n circles in the plane, and for the complexity of m distinct faces in an arrangement of circles. An improved incidence bound is also obtained for graphs of polynomials of any constant maximum degree.

متن کامل

Intersection Reverse Sequences and Geometric Applications

Pinchasi and Radoičić [11] used the following observation to bound the number of edges of a topological graph without a self-crossing cycle of length 4: if we make a list of the neighbors for every vertex in such a graph and order these lists cyclically according to the order of the emanating edges, then the common elements in any two lists have reversed cyclic order. Building on their work we ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2000