Drexel dragonThe Math ForumDonate to the Math Forum


Math Forum
 Ask Dr. Math
 Discussions
 Internet Newsletter
 MathTools
 Problems of the Week
 Teacher2Teacher
 Teacher Exchange
 Workshops

Search All of the Math Forum:
Browse our Internet Mathematics Library

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » Math Topics » geometry.college.independent

Topic: Families of straight lines
Replies: 0  

Advanced Search
Reply to this Topic Reply to this Topic

Back to Topic List Back to Topic List  
Maury Barbato

Posts: 789
From: University Federico II of Naples
Registered: 3/15/05
Families of straight lines
Posted: Aug 13, 2005 8:54 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

Hello,
I'm thinking about some particular families of straight lines, which I called "closed under intersection".I say that a family F of straight lines in the plane is "closed under intersection" if for every four elements a_1, a_2, b_1, b_2 of F such that a_1 and a_2 intersect in a point A, and b_1 and b_2 intesect in a point B, then the stright line passing through A and B belongs to F.
Dou you know if someone explored the properties of these particular objects?
Thank you for attention.
Maury Barbato

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2013. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.