# Search results

1. ### Background independent framework

What are the basics of non commutative geometry and where is a good place to learn more about it?
2. ### String quantized lagrangian

What is the quantized form of the strings lagrangian?
3. ### The natural logarithm

Does there exist a closed form formula for in(x)?
4. ### Quaternion theory

Quaternions are generalizations of 3- vectors, in the same as complex numbers are generalizations of 2- vectors. Should quaternions be considered an extension of the real numbers as the complex numbers were?
5. ### Quaternion derivatives

I am trying to work out some basic aspects in the theory of quaternions for some work in physics I'm doing. I have went through complex analysis and saw that the only way division ( and hence the derivative) could be defined was through a numerical definition of (i). My question is does there...
6. ### String Theory

String theory is what I'm currently studying. The dominant form is the action formulation of it. A classical string Lagrangian is submitted and quantized to produce the equations of motion of a string. Is there a purely quantum formulation of string theory that doesn't start with a classical...