
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
May 3rd, 2016, 06:46 AM  #1 
Newbie Joined: May 2016 From: Wageningen, The Netherlands Posts: 3 Thanks: 2  Given a>c and b>c, can I write {a,b}>c?
Hi, is there a shorter way of writing that a>c and b>c? Can I, for example, write {a,b}>c? Thomas 
May 3rd, 2016, 07:26 AM  #2 
Math Team Joined: Dec 2013 From: Colombia Posts: 7,236 Thanks: 2412 Math Focus: Mainly analysis and algebra 
Only if you define it first. In general, it is better to be clear than brief. Most mathematical notation outside of formal systems is there to clarify concepts. 
May 3rd, 2016, 09:51 AM  #3 
Senior Member Joined: Nov 2010 From: Indonesia Posts: 1,825 Thanks: 125 Math Focus: Trigonometry and Logarithm 
Cam't we write it as a, b > c? Didn't some number theory books write a, b, c > 0 to show that all three variables are positive?

May 3rd, 2016, 10:04 AM  #4 
Math Team Joined: Dec 2013 From: Colombia Posts: 7,236 Thanks: 2412 Math Focus: Mainly analysis and algebra 
It is sometimes written like that, but care needs to be taken that it is clear. To me, it is better to say "three (strictly) positive numbers $a$, $b$ and $c$".

May 3rd, 2016, 01:37 PM  #5 
Global Moderator Joined: May 2007 Posts: 6,454 Thanks: 567 
Simple short expression: min(a,b)>c


Tags 
a>c, b>c, inequalities, write 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Not sure how to write the formula.  GIjoefan1976  Algebra  3  March 16th, 2016 06:01 PM 
ReWrite  Dukeee  Calculus  1  July 10th, 2013 06:16 AM 
Can any one write this one in LaTex ?  rsoy  LaTex Help  3  March 22nd, 2013 07:55 PM 
write equation  MathNewb42  Applied Math  0  March 12th, 2013 06:53 AM 
How to write arithmetic  JohnDM  Number Theory  6  February 9th, 2013 02:56 PM 