Ethereum makes some noteworthy improvements to Bitcoin’s basic architecture. In particular, it utilizes “smart contracts” that enforce the performance of a given transaction, compel parties not to renege on their agreements, and contain mechanisms for refunds should one party violate the agreement.
— “Carried out by a network of government offices, Washington lobbyists, Hungarian diaspora groups, educational institutions and government-funded foundations, the effort’s main impact has been to bolster Mr. Orban’s image as a conservative leader on the world stage — and to counter his reputation as an authoritarian nationalist who is cozying up to Russia and China.”

Wavelets are wavelike functions used to transform signals into a representation which has time and frequency domain components. Visually wavelets appear as wave-like oscillations with an amplitude that starts at zero, increases, then returns to zero. Another way to consider a wavelet is as a bandpass filter, which can be applied to a time series under investigation, letting through only components of the time series within a finite range of frequencies to different extents depending on the energy spectrum of the wavelet. Wavelets take the form:
The price fluctuations came as conflicting reports on whether Chinese property giant Evergrande had "defaulted" on its loan surfaced.