Can't understand the meaning of some symbols

  • Thread starter Thread starter shakgoku
  • Start date Start date
  • Tags Tags
    Symbols
shakgoku
Messages
28
Reaction score
0

Homework Statement


This is an extract from elements of mechanics by giovanni.
I'[m unable to understand the meaning of R^d and C^\infty

http://flic.kr/p/9K8P7p

Homework Equations


The Attempt at a Solution

 
Last edited by a moderator:
Physics news on Phys.org
hi shakgoku! :smile:

Rd is the same as Rn …

i assume "d" stands for "dimension" :biggrin:​

and C∞ is the space of functions which are differentiable "infinitely many" times
 
Hey tiny-tim!

Thank you , now everything in the page makes sense to me! :)
 

Thread 'Finding the nth roots of a complex number'

There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
View full post »

Similar threads

Variation of parameters: where is my mistake?
Replies
2
Views
1K
Writing symbolically, and negating
Replies
2
Views
2K
Write symbolically: negation and useful denial
Replies
3
Views
2K
Symmetry of an Integral of a Dot product
Replies
9
Views
2K
Complex Integral to error function
Replies
9
Views
2K
Interpreting a statement in first order logic
Replies
3
Views
1K
Levi Civita symbol on Curl of Vector cross product
Replies
8
Views
4K
Integrating Over Two Variables: Deriving an Expression for dP/dt
Replies
2
Views
1K
Which of the following statements are true? (Real Analysis question)
Replies
15
Views
2K
Drawing conclusions by looking at integral
Replies
7
Views
2K

Hot Threads

Recent Insights

Back
Top