Web Reference: These notes are based on the string theory lecture course by Prof. Amihay Hanany, taught at Imperial College London in 2025. While they broadly follow the structure of the course, at times I decided to reorganise and/or add additional material. While this might have been a natural assumption in the early days of string theory, the perspective has changed during the last couple of decades, and D-branes (the result of considering Dirichlet boundary conditions instead) have becomes more and more important in our understanding of string theory. Given an initial and final shape for the string, all possible trajectories are surfaces that describe the motion of the initial shape into the final one. Topologically these surfaces are cylinders. To each of them we want to assign a number.
YouTube Excerpt: How to
Net Worth Profile Overview
String Find The Substring Index Net Worth 2026: Salary, Income & Wealth Net Worth & Biography
Estimated Worth: $5M - $24M
Salary & Income Sources
Career Highlights & Achievements
![Famous str.find(sub[, start[, end]]) - Find Lowest Index of Substring in Python Strings Wealth](https://i.ytimg.com/vi/PJpDMVw5KVw/mqdefault.jpg)
Assets, Properties & Investments
This section covers known assets, real estate holdings, luxury vehicles, and investment portfolios. Data is compiled from public records, financial disclosures, and verified media reports.
Last Updated: April 16, 2026
Net Worth Outlook & Future Earnings
Disclaimer: Disclaimer: Net Worth estimates are based on publicly available data, media reports, and financial analysis. Actual numbers may vary.