Erickson Tjoa – Medium

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Erickson Tjoa

Demystifying “1+2+3+4+…=-1/12”

How to make sense of infinite sums

9 min readNov 4, 2022

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Erickson Tjoa

“Snake fight” portion of thesis defence — revisited

It is two days before my thesis defence, and frankly, I am not sure what else to do except to bring myself into the room on Tuesday. A…

10 min readApr 30, 2023

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Erickson Tjoa

Checkpoint: one year in writing

Thoughts and where to go from here

7 min readSep 11, 2022

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Checkpoint: one year in writing

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Erickson Tjoa

Vacuum solutions of Einstein field equations are Ricci-flat

What we call tides are Ricci-flat part of gravity

5 min readAug 1, 2022

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Erickson Tjoa

Canonical commutation relation in quantum mechanics — why is it infinite-dimensional

A very simple argument by contradiction

2 min readJul 6, 2022

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Erickson Tjoa

P-EXP: on learning advanced physics and mathematics for your work

A physics PhD student’s experience (P-Exp)

9 min readJun 4, 2022

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P-EXP: on learning advanced physics and mathematics for your work

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Erickson Tjoa

How to multiply delta function and Heaviside function?

The surprisingly simple starting point of distribution theory and microlocal analysis in physics and mathematics

9 min readMay 7, 2022

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How to multiply delta function and Heaviside function?

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Erickson Tjoa

Scientific literacy (Level 1): distinguishing facts, laws, truths, beliefs

One of the biggest challenges of honest science is scientific communication. This is severely underdeveloped in comparison to the…

9 min readMar 25, 2022

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Scientific literacy (Level 1): distinguishing facts, laws, truths, beliefs

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Erickson Tjoa

Deafening silence, quiet blare

The world’s sorrow was loud. It is still blaring, deafening. Especially so since February 24. At the same time, the world is simultaneously…

2 min readMar 6, 2022

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Erickson Tjoa

Himawari-san（ひまわりさん）

Translated: “Miss Sunflower”

5 min readFeb 1, 2022

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Himawari-san（ひまわりさん）

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Erickson Tjoa

Erickson Tjoa

Graduate student in theoretical physics, specializing in general relativity, (relativistic) quantum information and quantum field theory in curved spacetimes.

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