index

id: 515313331bf9dd32304d313e5a0a5c92b398ee281a46f890b710063b4e14fd71

id (bech32): note129f3xvcml8wnyvzdxyl95zjuj2ee3m3grfr03y9hzqrrkns5l4csgmphcj

sig: 5ed975fc939ac5f3880dabed350a1315d2c7d648e55575614746404dd2b74fa590a21a438c191046853af80de41a4c63b825447a9d0677e35abfe26e54165714

created_at: 2023-08-25 01:32:11 +0900

created_at (unix time): 1692894731

content:

$$\bm a \cdot \bm b = |\bm a||\bm b| \cos \theta$$

JSON