二次函数

二 = 一 : Mnemonic symbol: a capacitor, because the two strokes remind me of the symbol in electrical drawings. Albert Einstein (Ø) is experimenting with a capacitor (二) in the space station's bathroom (Ø4). He finds that it's uncomfortable to discharge a capacitor using two flutes (一).

次 = 冫 + 欠 : Mnemonic symbol: the cube, as in words involving 三次 relate to "cubic equations" or "cube (third power)". The King of Chu (c) pulls a popsicle (冫) out of the cube (次) in the space station's bathroom (Ø4) and leaves an IOU note (欠) on the cube.

函 = 丂 + 氺 + 凵 : Hamlet (h) is waterboarded in the anthill's kitchen (an2). He is trapped in a metal box (凵) wearing a breathing mask (丂) while being under a continuous stream provided by an aqueduct (氺). He is allowed to send one last letter (函) home, though.

函 = 丂 + 氺 + 凵 : Hamlet (h) is waterboarded in the anthill's kitchen (an2). He is trapped in a metal box (凵) wearing a breathing mask (丂) while being under a continuous stream provided by an aqueduct (氺). He is allowed to send one last letter (函) home, though.

数 = 娄 + 攵 : Sheldon Shrimp (shu) occupied a lunar mansion (娄) inside of the space station (Ø3) although he knows that it is to be torn down. Outside of his lunar mansion the construction (or rather destruction) workers are already counting (数) down from ten. When they count (数) zero, they will start taking down the whole thing with their sledgehammers (攵).