ロマンスという語は、スペイン語のロマンセ（スペイン語: romance）ないしはロマンサ（スペイン語: romanza）に遡り、もともと説話や口承文学を指すものだった。18世紀にイタリア語経由で音楽用語に取り入れられ、抒情的な楽曲に題名として添えられるようになった。内容的・性格的には、バロック音楽のエールの延長上にありながら、主情的で甘美な内容を最大の特色とする点において、19世紀のさまざまなキャラクター・ピースのはじまりになったと言ってよい。とりわけ無言歌はフランス語で“Romance[s] sans paroles”と呼ばれるように、ロマンスを母胎として産み出されている。
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edited Jul 31 '12 at 14:45
Jorge Castro
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asked Jul 31 '12 at 5:16
Goivind Tiwari Goivind Tiwari
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I have found the following Fibonacci Identity (and proved it). If $F_n$ denotes the nth Fibonacci Number, we have the following identity begin{equation} F_{n-r+h}F_{n+k+g+1} - F_{n-r+g}F_{n+k+h+1} = (-1)^{n+r+h+1} F_{g-h}F_{k+r+1} end{equation} where $F_1 = F_2 = 1$ , $r leq n$ , $h leq g$ , and $n, g, k in mathbb{N}$ . It is not too hard to show that this identity subsumes Cassini's Identity, Catalan's Identity, Vajda's Idenity, and d'Ocagne's identity to name a few. I have done a pretty thorough literature review, and I have not found anything like this, but I am still wondering if anyone has seen this identity before? I found this by accident after noticing some patterns in some analysis work I was doing, so if this is already known I would be curious to see w...
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