Harold Sultan
About Me
I am a part time Instructor of Mathematics at George Washington University. I earned my PhD from Columbia, where my advisors were Jason Behrstock and Walter Neumann.
Research Interests
Geometric Group Theory,
Low Dimensional Topology
Mapping Class Groups,
Teichmuller Theory
I also work at Hightouch on agentic AI systems for marketing and data infrastructure.
Teaching
George Washington University
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MATH 1231: Single-Variable Calculus I (Fall 2026)
- August 25, 2026 - Intro to Functions
- August 27, 2026 - Transformations and Trigonometry
- September 1, 2026 - Limits
- September 3, 2026 - Limit Laws
- September 8, 2026 - Continuity
- September 10, 2026 - Formal Limit Definition
- September 11, 2026 - Quiz1 Solutions
- September 15, 2026 - Intro to Derivatives
- September 17, 2026 - Derivative Rules
- September 22, 2026 - Rates of Change
- September 24, 2026 - Derivatives of Trigonometric Functions
- September 25, 2026 - Quiz2 Solutions
- September 29, 2026 - Chain Rule and Implicit Differentiation
- October 1, 2026 - Related Rates and Linear Approximations
- October 6, 2026 - Midterm1 Solutions
- October 15, 2026 - Maxima and Minima
- October 20, 2026 - Mean Value Theorem
- October 22, 2026 - Graphs and Infinity
- October 27, 2026 - Curve Sketching and Applied Optimization
- October 29, 2026 - Approximating Areas
- November 3, 2026 - Definite Integral
- November 5, 2026 - Fundamental Theorem of Calculus
- November 10, 2026 - Integration Formulas
- November 12, 2026 - Substitution
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MATH 1231: Single-Variable Calculus I (Spring 2026)
- January 15, 2026 - Transformations and Trigonometry
- January 20, 2026 - Intro to Limits
- January 22, 2026 - Limit Laws
- January 27, 2026 - Continuity
- January 29, 2026 - Limits with Epsilon Delta
- February 3, 2026 - Introduction to Derivatives
- February 5, 2026 - Differentiation Rules
- February 10, 2026 - Rates of Change
- February 12, 2026 - Trigonometric Derivatives
- February 17, 2026 - Chain Rule
- February 19, 2026 - Implicit Differentiation
- February 24, 2026 - Related Rates and Linear Approximations
- February 26, 2026 - Critical Points and MVT
- March 17, 2026 - Shapes of Graphs
- March 19, 2026 - Infinity and Optimizations
- March 24, 2026 - Approximating Areas
- March 26, 2026 - Definite Integral
- March 31, 2026 - Fundamental Theorem of Calculus
- April 2, 2026 - Integration Formulas
- April 7, 2026 - Integration by Substitution
- April 14, 2026 - Area between Curves
- April 16, 2026 - Volume by Slicing
- April 21, 2026 - Cylindrical Shells
- April 23, 2026 - Arc Length
Previous Teaching