Arindam Khan
@arindamkhan.bsky.social
200 followers 480 following 72 posts
Algorithmist CS Prof. @ IISc Bangalore. Past: Georgia Tech, IIT Kharagpur
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arindamkhan.bsky.social
All these rates are not uniform across subareas. Small subcommunities often push papers from their cliques.
arindamkhan.bsky.social
Packing hypercubes & spheres in d-dim: ICALP’22, ICALP’24 — settled with a PTAS!
Online & fairness variants: Algorithmica’21 (random-order arrival), AAMAS’21 (group fairness).
If you’re exploring these directions, I’d love to connect — feel free to reach out after checking out some of these papers.
arindamkhan.bsky.social
💫 Some of my recent research on knapsack:
- 2D Knapsack: FOCS’17 paper gave improved approximation after a decade (Jansen–Zhang SODA’04); SOCG’21 showed pseudo-polynomial time can achieve better approximations.
- 3D Knapsack: SOCG’25 paper gave the first improvement since Diedrich et al., 07.

(1/2)
arindamkhan.bsky.social
💡 Why Knapsack is one of my favorite problems:
✅ Simple to state, hard to solve (NP-hard). Elegant techniques, longstanding open problems!
- 1D Knapsack: allows pseudo-polynomial time algorithms.
- 2D Knapsack: a PTAS remains open.
- 3D & higher: beautiful challenges in geometry.
arindamkhan.bsky.social
🎒 Knapsack — We understand what's truly important when we pack our bags!

📢 I’ve just rolled out a comprehensive 7-part lecture series on the Knapsack Problem — one of the cornerstone problems in algorithms.

📺 Watch the full series on my channel:
👉 Algo-rindam lnkd.in/gBxPtkCq
arindamkhan.bsky.social
🚀 Biggest Graph Algorithms Workshop in India!

Walmart Center for Tech Excellence (WACE) at CSA, IISc is organizing the Frontiers of Graph Algorithms Workshop, happening during December 8–12, 2025 at the Indian Institute of Science (IISc), Bengaluru! 🎓

Details: algo.csa.iisc.ac.in/graphworkshop/
arindamkhan.bsky.social
Had a fun and productive week in Germany, participating in the Dagstuhl seminar on Precision in Geometric Algorithms.

Photo: with my "packing" team: Anders Aamand (Rice University), Eunjin Oh (POSTECH), Linda Kleist (U Hamburg), Csaba Toth (CalState), and Mikkel Vind Abrahamsen (U Copenhagen).
arindamkhan.bsky.social
But we do have the magic of algorithms. 💡

In my new video lecture for Design and Analysis of Algorithms, I dive into Interval Scheduling: Given a set of overlapping job requests, find the best non-overlapping subset to serve.

(2/n)
arindamkhan.bsky.social
✨ Magic of Algorithms: Scheduling for Muggles ✨

Remember Hermione in Prisoner of Azkaban?
She wanted to attend all her classes—Care of Magical Creatures, Arithmancy, Muggle Studies … but schedules overlapped. Her secret weapon? The time-turner. ⏳
For us mere muggles, we dn’t have time-turners. 1/n
arindamkhan.bsky.social
👉 🇮🇳 🇧🇩 Bangla Video:

Part 1: Introduction & Meta-Algorithm lnkd.in/gVEiXGAP

Part 2: Kruskal & Boruvka's Algorithm lnkd.in/gBkuYFVR

Part 3: Jarnik-Prim Algorithm lnkd.in/gh3Cr-tT

Part 4: More on Greedy Algorithms lnkd.in/g2f9AGCB

(n/n)
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arindamkhan.bsky.social
🎥 Videos are available in English and Bangla.
👉 🏴󠁧󠁢󠁥󠁮󠁧󠁿 🇺🇸 English
Part 1: Introduction & Meta-Algorithm lnkd.in/gF_6Fw5k
Part 2: Kruskal & Boruvka's Algorithm lnkd.in/gZJA4rNe
Part 3: Jarnik-Prim Algorithm lnkd.in/g4wZc5wN
Part 4: More on Greedy Algorithms lnkd.in/gqrg8Dk3

#Algorithms #MST
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arindamkhan.bsky.social
📺 In this 4-part video series, we dive deep into MST:
Part 1: Introduction & Meta-Algorithm behind MST,
Parts 2 & 3: Prim’s, Kruskal’s, and Borůvka’s algorithms as different implementations of the same template,
Part 4: Extensions, applications, & the general template for greedy algorithms.

(3/n)
arindamkhan.bsky.social
🔑 MST is one of the fundamental problems in algorithms (and yes, part of the GATE syllabus). But here’s the catch—many students only learn how Prim’s, Kruskal’s, and Borůvka’s algorithms work, but not why they work.

(2/n)

#Algorithms #GATE #India
arindamkhan.bsky.social
🚀 What connects Mohan Bhargava (SRK) in Swades and Otakar Borůvka in Moravia?
👉 Minimum Spanning Tree (MST).

In Swades, SRK faced the challenge of connecting all village homes to the power plant at min cost. Borůvka solved the same for electrification of Moravia in 1926 —the first MST algorithm.
arindamkhan.bsky.social
🚀 Dynamic Programming through "Lord of the Rings".

🪄 Gandalf’s Memoization: Top-Down strategy, uses a memo to avoid repeated work.
🧝‍♂️ Frodo’s Bottom-Up Journey: Start from foothills & climb up to reach Mount Doom.

English: www.youtube.com/watch?v=16t5...
Bengali: www.youtube.com/watch?v=Ap55...
arindamkhan.bsky.social
How Sanskrit Poetry led to the discovery of recursion & binary numbers!

🎬 English video: [https://www.youtube.com/watch?v=pBCGOCA2_wc] (with explanations using Sanskrit chhandas)

🎬 Bengali video: [https://www.youtube.com/watch?v=FJWm5RiBMmc] (explanations using Bengali chhandas)

#Algorithms #CS
arindamkhan.bsky.social
🚀 How can Sanskrit poetry connect to computer science?

The challenge of generating poetry in Varnavrutta (syllable-based metres) gave rise to the discovery of binary numbers.

The exploration of Mātrāvṛtta led to the ideas of recursion & DP.

Video links below.

#Algorithms #Prosody #Sanskrit
arindamkhan.bsky.social
🚀 Stable Marriage & Nobel Prize!

Memes: Stable matchings using Bollywood -- from Kabhi Alvida Naa Kehna, Dil To Pagal Hai, Hum Saath Saath Hai, Raanjhanaa, and Style. HIMYM gets an entry, too.

🎬 English video: www.youtube.com/watch?v=lazg...
🎬 Bengali video: www.youtube.com/watch?v=DtVT...
arindamkhan.bsky.social
📚 Algorithms in Bengali – A New Lecture Series 🎥

I’m launching a new lecture series on Algorithms – entirely in Bengali.

Let’s make computer science learning more inclusive and more accessible for vernacular medium students.

www.youtube.com/watch?v=4JR0...

#IISc #CSA #Bengali #English
বাংলা ভাষায় বিজ্ঞান চর্চা: Algorithms in Bengali -- Lecture 1: Introduction
YouTube video by Algo-rindam
www.youtube.com
arindamkhan.bsky.social
In the latest video, I cover:
📚 6 great textbooks + video & competitive programming resources
📜 The fascinating history of algorithms — from the Lebombo bone to Sulbhasutras
💡 Why I believe the first human invention was… an algorithm!

▶️ Link: www.youtube.com/watch?v=iBhJ...

#Algorithms #India
Design and Analysis of Algorithms (IISc): Lecture 1. Introduction
YouTube video by Algo-rindam
www.youtube.com
arindamkhan.bsky.social
🚀 Excited to share something close to my heart!

This semester, I’m co-teaching Design and Analysis of Algorithms (DAA) at IISc — and bringing the fun to YouTube with my channel "Algo-rindam" 🎥
Think Bollywood, cricket, and algorithms all in the same lecture.

#Algorithms #IISc
arindamkhan.bsky.social
A PhD may have only one name on the certificate, but it’s a team sport.
Here’s to my village — I couldn’t have done it without you. 🙏

Image: From the acknowledgement page of my thesis -- alluding to rectangle packing. My thesis was on approximation algorithms on multidimensional bin packing.