Digitalis Purpurea (band) a videoclip and credits Cristian as its creative director, producer and protagonist. Digitalis Purpurea (band) Cristian Pi Greco (born 3 November 1982), known by his stage name DIGITALIS PURPUREA, is an Italian songwriter, multi-instrumentalist, sound designer and audio engineer based in Turin, Italy. His musical creations are a mixture of Industrial, Giallo, Conceptual Noise, Glam Rock, Darkwave and Black Metal soundscapes. He is signed to Danse Macabre Records and Aural Music. He worldwide released four full-length albums including "30-hole and Fred Perry" which reached the TOP-10 spot on the DAC - Deutsche Alternative Charts and he played in major international
Derive (computer algebra system) Derive (computer algebra system) Derive was a computer algebra system, developed as a successor to muMATH by the Soft Warehouse in Honolulu, Hawaii, now owned by Texas Instruments. Derive was implemented in , also by Soft Warehouse. The first release was in 1988 for DOS. It was discontinued on June 29, 2007 in favor of the TI-Nspire CAS. The last and final version is Derive 6.1 for Windows. Since Derive required comparably little memory, it was suitable for use on older and smaller machines. It was available for the DOS and Windows platforms and was used also in TI pocket