## Welcome to Yongheng Zhang's Homepage!

### Interests

Algebraic topology. Homotopy theory. And applications. I think about configuration spaces (and their variants) of points in spaces and using them to probe questions in algebra, geometry and topology.

### Publication

Kaufmann, Ralph M.; Zhang, Yongheng **Permutohedral structures on E _{2}-operads**.

*Forum Math.*29 (2017), no. 6, 1371-1411.

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### Current Teaching (Fall 2019)

- MATH 105 Calculus with Algebra
- MATH 211 Multivariable Calculus

### Regular Office Hours

- Monday 3:00-4:20 PM
- Wednesday 9:30-10:50 AM, 3:00-4:20 PM
- Thursday 3:30-4:20 PM
- Friday 9:30-10:50 AM

### Office Location

- Seeley Mudd 510

### Previous Teaching

- MATH 111 Introduction to the Calculus (f15)
- MATH 211 Multivariable Calculus (f15, s16, f16, s17, f17, s18, f18, s19)
- MATH 260 Differential Equations (s18: fiction by Cindy Lopez)
- MATH 345 Functions of a Complex Variable (f16: poem by Greg Carroll, f18: online game by Sai Chauhan)
- MATH 350 Groups, Rings and Fields (f17,s19)
- MATH 355 Introduction to Analysis (s16)
- MATH 455 Topology (s17: 50 lessons [90MB] 50 lessons without notes [20MB])

### Teaching at Purdue

- Geometry for Elementary Teachers
- Topology for High School Students (notes by Hannah Burnau)
- Calculus I, II, III
- Linear Algebra
- ODE and basic PDE