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April 28, 2018
Orthocenter and equal circles

This post is about the concept of Orthocenter (the intersection point of altitudes) and equal circles. Watch the videos and learn.

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April 26, 2018
Geometry of Motion: Open Seminar

Learn about the Geometry of Motion in an Open Seminar organized by us. Want to Join or learn more? Get all the information here.

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April 24, 2018
Bijections in Combinatorics (TOMATO Obj 168)

Bijection principle is a very useful tool for combinatorics. Here we pick up a problem that appeared in I.S.I.'s B.Stat-B.Math Entrance. Part 1: The problem and the hints Part 2  Part 3

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April 23, 2018
Algebraic Identity (TOMATO Objective 16)

Watch and learn the concept of Algebraic Identity from TOMATO Objective, Problem 16. This is useful for the students preparing for ISI and CMI Entrance.

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April 22, 2018
Adventures in Geometry 1

Preface In geometry, transformation refers to the movement of objects. Adventures in Geometry 1 is the first part of  "Adventures in Geometry" series.The content is presented as a relatively free-flowing dialogue between the Teacher and the Student. Also Visit: Math Olympiad Program Teacher: Stationary objects such as triangles, points or circles are not that interesting […]

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April 20, 2018
Starters book in Algebra continued

Now lets discuss about the Second chapter named as SUBGROUPS . As mentioned before I am following the sequence of chapters from Herstein. IMPORTANT IDEAS: i) First go through the definition very well. You will see that H is a subgroup of G when H is a group under the same operation of G, and […]

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April 15, 2018
Shortest Path on Cube

Can you find the shortest path on cube? Let's understand with the help of a problem. Here is a solution presented by the students in class.

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April 4, 2018
গ্রুপোন্তিশ ২
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April 3, 2018
গ্রুপোন্তিশ ১

গ্রুপ থিয়োরি নিয়ে বাংলায় একটা কোর্স তৈরি করার ইচ্ছা বহুদিনের। এই ভিডিও সিরিজটা তারই শুরুয়াদ। আমরা প্রচুর ইংরেজি শব্দ ব্যাবহার করব। তারই সাথে চলতি বাংলা থেকে কিছু ছবি, কিছু কথা, কিছু ধ্বনি আনিত হবে।  গ্রুপ কয় কাহারে? আমরা 'ডেফিনেশন' দিয়ে শুরু করতে পারি। কিন্তু তার বদলে শুরু করছি একটা বেশ কৌতূহলোদ্দীপক উদাহরণ দিয়ে। ভিডিওটা দেখার […]

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March 29, 2018
Integer solutions of a three variable equation

Let's learn how to find the integer solutions of a three variable equation. Problem: Consider the following equation: \( (x-y)^2 + (y-z)^2 + (z - x)^2 = 2018 \). Find the integer solutions to this three variable equation. Discussion: Set x - y = a, y - z = b. Then z - x = - […]

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