FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups 
 ProfileProfile   PreferencesPreferences   Log in to check your private messagesLog in to check your private messages   Log inLog in 
Forum index » Science and Technology » Math » Undergraduate
Where can i find problems in relations and equivalence relations?
Post new topic   Reply to topic Page 1 of 1 [3 Posts] View previous topic :: View next topic
Author Message
TOMERDR
science forum beginner


Joined: 09 May 2006
Posts: 26

PostPosted: Mon Jul 03, 2006 7:11 am    Post subject: Where can i find problems in relations and equivalence relations? Reply with quote

Hi,
I am looking for problems with answers regarding relations and
equivalence Relations.

for example a good question can be:

"Is there a relation which is reflexive symetric and antisymmetric"

Btw my strategy to solve such problems is to write the definition
and using operation on sets and de morgan law to simplify it..is this a
good method?

Thanks in advance.
Back to top
William Elliot
science forum Guru


Joined: 24 Mar 2005
Posts: 1906

PostPosted: Mon Jul 03, 2006 8:23 am    Post subject: Re: Where can i find problems in relations and equivalence relations? Reply with quote

On Mon, 3 Jul 2006, TOMERDR wrote:

Quote:
I am looking for problems with answers regarding relations and
equivalence Relations.

Relations or binary relations? For the later, read about

order theory and they'll pop up all over the place.

Quote:
for example a good question can be:

"Is there a relation which is reflexive symmetric and antisymmetric"

Good question, got any others? Anyway yes, give an example.

If a relation is symmetric and anti-symmetric, show it's reflexive.

Anti-symmetric is a <= b, b <= a -> a = b
tho some call that asymmetric, using the former for
not(a <= b, b <= a).

Quote:
Btw my strategy to solve such problems is to write the definition and
using operation on sets and de morgan law to simplify it..is this a good
method?

DeMorgan laws are good to know and use. In addition, you'll likely

develop other techniques.
Back to top
G.E. Ivey
science forum Guru


Joined: 29 Apr 2005
Posts: 308

PostPosted: Mon Jul 03, 2006 4:09 pm    Post subject: Re: Where can i find problems in relations and equivalence relations? Reply with quote

Quote:
On Mon, 3 Jul 2006, TOMERDR wrote:

I am looking for problems with answers regarding
relations and
equivalence Relations.

Relations or binary relations? For the later, read
about
order theory and they'll pop up all over the place.

for example a good question can be:

"Is there a relation which is reflexive symmetric
and antisymmetric"

Good question, got any others? Anyway yes, give an
example.
If a relation is symmetric and anti-symmetric, show
it's reflexive.

Anti-symmetric is a <= b, b <= a -> a = b
tho some call that asymmetric, using the former for
not(a <= b, b <= a).

Btw my strategy to solve such problems is to write
the definition and
using operation on sets and de morgan law to
simplify it..is this a good
method?

DeMorgan laws are good to know and use. In addition,
you'll likely
develop other techniques.


And writing out PRECISE definitions is always a good idea!
Back to top
Google

Back to top
Display posts from previous:   
Post new topic   Reply to topic Page 1 of 1 [3 Posts] View previous topic :: View next topic
The time now is Sat Oct 22, 2011 1:06 pm | All times are GMT
Forum index » Science and Technology » Math » Undergraduate
Jump to:  

Similar Topics
Topic Author Forum Replies Last Post
No new posts Possible to Find the Clusters One by One?? mathlover num-analysis 0 Thu Jul 20, 2006 7:10 pm
No new posts Possible to Find the Clusters One by One?? mathlover Math 0 Thu Jul 20, 2006 7:04 pm
No new posts approximating infinite linear programming problems diegotorquemada@yahoo.com Math 0 Mon Jul 17, 2006 10:29 am
No new posts Three practice algebra qual problems Snis Pilbor Math 4 Sat Jul 15, 2006 11:12 pm
No new posts Probability to find a substring in a string Eighty Math 7 Fri Jul 14, 2006 12:01 pm

Copyright © 2004-2005 DeniX Solutions SRL
Other DeniX Solutions sites: Electronics forum |  Medicine forum |  Unix/Linux blog |  Unix/Linux documentation |  Unix/Linux forums  |  send newsletters
 


Powered by phpBB © 2001, 2005 phpBB Group
[ Time: 0.1000s ][ Queries: 16 (0.0309s) ][ GZIP on - Debug on ]