## 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 2020)

- MATH 211 Multivariable Calculus

### Regular Office Hours

- via ZOOM

### Office Location

- Seeley Mudd 510; teaching from home

### Previous Teaching

- MATH 105 Calculus with Algebra (f19)
- MATH 111 Introduction to the Calculus (f15)
- MATH 211 Multivariable Calculus (f15, s16, f16, s17, f17, s18, f18, s19, f19, s20)
- 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, s20)
- 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

### Living Proof

### Where Theory meets Chalk, Dust Flies

### Math from Three to Seven by Zvonkin

### Tokyo 2020 Emblems

and how they (Olympic, Paralympic) look like if drawn by straightedge and compass