The term calculus of variations is identified in base64 scheme by the sequence Y2FsY3VsdXMgb2YgdmFyaWF0aW9ucw==, while the MD5 signature is equal to b03a3551d14127afefd36120d7e60f02. The ASCII encoding of calculus of variations in hexadecimal notation is 63616c63756c7573206f6620766172696174696f6e73.