“Die Mathematik ist es, die uns vor dem Trug der Sinne schützt und uns den Unterschied zwischen Schein und Wahrheit kennen lehrt.” ― Leonhard Euler

**Inspiration**With my love for math and respect for Leonhard Euler, as well as my passion for Mechanical Keyboard, I combined ideas and designed the GMK Euler Keycap set. Colors are coordinated to create shades like a chalkboard, which is familiar to math learners with its gray-related color scheme. GMK CR and GMK WS1 are colors combo for Modifier Keys. With Alpha Keys I use RAL 9017 in combination with GMK WS1 to create a different feeling compared to Modifier Keys but still have a connection with the main tone. Finally, a few Accent Keys with a combination of RAL 9022 and GMK WS1 representing the chalks while still taking advantage of the GMK’s biggest advantage is the fact that the Legend's color is brighter than the Base color with Double Shot technology.

**Original Interest Check****Contact**Email: iamtienng@gmail.com

Instagram:

@iamtienngDiscord: iamtienng#3485

**Vendors**US: Captus Keycaps

UK: Proto[Typist]

OCE: Daily Clack Deskmat on Daily Clack

Canada: DESK[H]ERO Deskmat on DESK[H]ERO

Asia: kibou Deskmat on kibou

Korea: Swagkeys

China: zFrontier

EU: MyKeyboard.eu

**Group Buy Date**

From December 28, 2022 to January 28, 2022.

Estimated Fulfillment Time: Q4 2023 - Q1 2024

**Products Information**Manufacturer: GMK

Profile: Cherry 1-1-2-3-4-4

Colors: 2 Custom Colors, 2 GMK Stock Colors

Colorways

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**Pricing (Price will be updated)**More

Base Kit

Captus Keycaps: $129.99 w/o taxes

Proto[Typist]: £108.33 w/o taxes

Daily Clack: A$212

DESK[H]ERO: C$187

kibou: HK$1050

Swagkeys: ₩188000

zFrontier: ¥999

MyKeyboard.eu: €145

Spacebars Kit

Captus Keycaps: $25.99 w/o taxes

Proto[Typist]: £21.67 w/o taxes

Daily Clack: A$78

DESK[H]ERO: C$36

kibou: HK$255

Swagkeys: ₩38000

zFrontier: ¥219

MyKeyboard.eu: €31

Novelties Kit

Captus Keycaps: $47.99 w/o taxes

Proto[Typist]: £40.00 w/o taxes

Daily Clack: A$42

DESK[H]ERO: C$56

kibou: HK$425

Swagkeys: ₩69000

zFrontier: ¥389

MyKeyboard.eu: €55

GMK Euler & HIBI — Icosahedron

Captus Keycaps: $52 w/o taxes

Proto[Typist]: £43.33 w/o taxes

Daily Clack: A$85

DESK[H]ERO: C$66

kibou: HK$405

Swagkeys: ₩75000

zFrontier: ¥399

MyKeyboard.eu: €59

Deskmat - Mathematik

Captus Keycaps: $20 w/o taxes

Proto[Typist]: £16.67 w/o taxes

Daily Clack: A$34

DESK[H]ERO: C$28

kibou: HK$160

Swagkeys: ₩28000

zFrontier: ¥139

MyKeyboard.eu: €22

**Kits****[Base Kit]**Regarding the Base Kit, I was too greedy to wish it could cover as much as it could with 1.5u Code keys for Mac user, 40s support, HHKB, 660, ISO and Alice layout support with several additional keys. Of course, Base Kit will also support common layouts like ANSI, WKL TKL, 65%/75% and Numpad.

About Cadet Sublegends: I got approval to use Cadet Sublegends from Oblotzky.

Disclaimer: The Cadet Sublegends in Renders may not be the same as the actual product, the final product will be the same as

GMK Space Cadet.

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**[Spacebars]**If you need further support the layout like true HHKB that needs 6C spacebar key, you can choose to support us with Spacebars Kit. The Spacebars Kit even supports two 3C spacebar keys for splitting spacebar and all the spacebar keys in the Base Kit but with accent color.

**[Novelties]**Novelties are constituted by Euler's two most famous constants. The first one is γ (gamma) called Euler's constant (sometimes also called the Euler–Mascheroni constant), which is defined as the limiting difference between the harmonic series and the natural logarithm. The second constant e, Euler's number, is a mathematical constant approximately equal to 2.71828 which can be characterized in many ways. It is the base of the natural logarithms. With a key with a length of 2.25u, I dedicate it to show Euler’s Identity: 'The Most Beautiful Equation'. At last, to turn ideas into keycaps in a better way, I choose Euler characteristic for side and special keys. It is a topological invariant, a number that describes a topological space's shape or structure regardless of the way it is bent. The polyhedral in novelties are Icosahedron, Tetrahedron, Hexahedron, Octahedron and Dodecahedron.

**Deskmat****[Mathematik]**To talk about Deskmat, it has also gone through a lot of difficult stages to be able to come to the current design. Except for the two drawings at the left and right parts of the design area, all the writing as well as the mathematical equations shown are completely handwritten without using any built fonts.

**HIBI****[GMK Euler & HIBI — Icosahedron]****Finish ** | **Icosahedron ** | **Profile ** | **Size** |

**Black Anodizing** | **Gray Anodizing** | **R1** | **1u** |

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Last but not least, in collaboration with HIBI, Kate made my idea of a three-dimensional representation of the Icosahedron perfect on their artisan. The GMK Euler & HIBI — Icosahedron is made up of two separate parts, the Base part includes the MX Mount and is anodized in GMK CR. The Icosahedron part is decoupled and anodized in RAL 9022.

**Renders****FLX Virgo by Flex**More

**Werk One by Zaum**More

**F2-84 by Geon**More

**Collaboration****Cable**TBD

**Artisans**TBD

**Signature**`[url=https://geekhack.org/index.php?topic=119227.0][img width=180 height=120]https://i.imgur.com/lPlz6M2.jpg[/img]`