How Many Roots Exist for Complex Numbers Raised to Irrational Powers?

Click For Summary
SUMMARY

Every complex number, except zero, has n nth roots. When raising a complex number to an irrational or transcendental power, the result is defined using the formula z^w := exp(w Log z). In the complex plane, this operation yields an infinite number of values due to the multi-valued nature of complex exponentiation. The discussion highlights the necessity of understanding complex logarithms and the implications of irrational exponents in complex analysis.

PREREQUISITES
  • Complex analysis fundamentals
  • Understanding of complex logarithms
  • Knowledge of exponential functions in the complex plane
  • Familiarity with Taylor series expansions
NEXT STEPS
  • Study the properties of complex logarithms and their applications
  • Explore the concept of multi-valued functions in complex analysis
  • Learn about the implications of irrational exponents on complex numbers
  • Investigate Taylor series and their role in defining functions of complex variables
USEFUL FOR

Mathematicians, students of complex analysis, and anyone interested in the behavior of complex numbers under irrational and transcendental exponentiation.

cjellison
Messages
18
Reaction score
0
There are n nth roots to every complex number (except zero).

My question: How many "roots" are there when you take a complex number to an irrational or transcendental number. For that matter, how do we define raising a number to an irrational number? How do we define raising a number to a transcendental number?

Hmm...how is this defined? By a taylor series?

[tex] e^{1/e}[/tex]
 
Physics news on Phys.org
By definition, in the complexes:

[tex]z^w := \exp(w \mathop{\mathrm{Log}} z)[/tex]
 
In the complex plane, a number to an irrational (whether transcendental or not) power has an infinite number of values.
 

Similar threads

  • · Replies 13 ·
Replies
13
Views
7K
  • · Replies 14 ·
Replies
14
Views
2K
  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 12 ·
Replies
12
Views
3K
  • · Replies 2 ·
Replies
2
Views
4K
  • · Replies 0 ·
Replies
0
Views
3K
  • · Replies 22 ·
Replies
22
Views
2K
  • · Replies 3 ·
Replies
3
Views
4K
  • · Replies 2 ·
Replies
2
Views
4K
  • · Replies 2 ·
Replies
2
Views
2K