1904 introductions

thumb|Various semiconductor diodes. Left: A four-diode bridge rectifier. Next to it is a [[1N4148 signal diode. On the far right is a Zener diode. In most diodes, a white or black painted band identifies the cathode into which electrons will flow when the diode is conducting. Electron flow is the reverse of conventional current flow.]]

theorem in geometric topology that every simply connected, closed 3-manifold is homeomorphic to the 3-sphere

Neverland is a fictional island featured in the works of J. M. Barrie and those based on them. It is an imaginary faraway place where Peter Pan, Tinker Bell, Captain Hook, the Lost Boys, and some other imaginary beings and creatures live.

a priori constructed language

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is a Japanese saving method. The term translates to "household ledger" and is meant for household financial management. Kakeibo varies in structure, but their principle remain the same. At the beginning of the month, the kakeibo user writes down the income and necessary expenses for the month ahead and decides some kind of savings target. Daily expenses are recorded and totaled at the end of each week and again at the end of the month. At the end of the month, a summary of the month's spending is written in the ledger. In addition to expenses and income, thoughts and observations are written i

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