Maintainer: ‘Hideitsu Hino <hinohide@cs.tsukuba.ac.jp>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: c(person(given = "Hideitsu",
                      family = "Hino",
                      role = c("aut", "cre"),
                      email = "hinohide@cs.tsukuba.ac.jp"),
               person(given = "Ken",
                      family = "Takano",
                      role = "aut"),
               person(given = "Yuki",
                      family = "Yoshikawa",
                      role = "aut"),
               person(given = "Noboru",
                      family = "Murata",
                      role = "aut"))
as necessary.
checkRd: (-1) k2d.Rd:26: Lost braces
    26 | d_ND(x,y) = sqrt{ k(x,x) - 2k(x,y) + k(y,y)}.
       |                 ^
checkRd: (-1) k2d.Rd:34: Lost braces
    34 | d_n(x,y) = 1 - k(x,y)/sqrt{ k(x,x)k(y,y)},
       |                           ^
Maintainer: ‘Hideitsu Hino <hinohide@cs.tsukuba.ac.jp>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: c(person(given = "Hideitsu",
                      family = "Hino",
                      role = c("aut", "cre"),
                      email = "hinohide@cs.tsukuba.ac.jp"),
               person(given = "Ken",
                      family = "Takano",
                      role = "aut"),
               person(given = "Yuki",
                      family = "Yoshikawa",
                      role = "aut"),
               person(given = "Noboru",
                      family = "Murata",
                      role = "aut"))
as necessary.
checkRd: (-1) k2d.Rd:26: Lost braces
    26 | d_ND(x,y) = sqrt{ k(x,x) - 2k(x,y) + k(y,y)}.
       |                 ^
checkRd: (-1) k2d.Rd:34: Lost braces
    34 | d_n(x,y) = 1 - k(x,y)/sqrt{ k(x,x)k(y,y)},
       |                           ^
checkRd: (-1) k2d.Rd:26: Lost braces
    26 | d_ND(x,y) = sqrt{ k(x,x) - 2k(x,y) + k(y,y)}.
       |                 ^
checkRd: (-1) k2d.Rd:34: Lost braces
    34 | d_n(x,y) = 1 - k(x,y)/sqrt{ k(x,x)k(y,y)},
       |                           ^
checkRd: (-1) k2d.Rd:26: Lost braces
    26 | d_ND(x,y) = sqrt{ k(x,x) - 2k(x,y) + k(y,y)}.
       |                 ^
checkRd: (-1) k2d.Rd:34: Lost braces
    34 | d_n(x,y) = 1 - k(x,y)/sqrt{ k(x,x)k(y,y)},
       |                           ^
checkRd: (-1) k2d.Rd:26: Lost braces
    26 | d_ND(x,y) = sqrt{ k(x,x) - 2k(x,y) + k(y,y)}.
       |                 ^
checkRd: (-1) k2d.Rd:34: Lost braces
    34 | d_n(x,y) = 1 - k(x,y)/sqrt{ k(x,x)k(y,y)},
       |                           ^
checkRd: (-1) k2d.Rd:26: Lost braces
    26 | d_ND(x,y) = sqrt{ k(x,x) - 2k(x,y) + k(y,y)}.
       |                 ^
checkRd: (-1) k2d.Rd:34: Lost braces
    34 | d_n(x,y) = 1 - k(x,y)/sqrt{ k(x,x)k(y,y)},
       |                           ^
checkRd: (-1) k2d.Rd:26: Lost braces
    26 | d_ND(x,y) = sqrt{ k(x,x) - 2k(x,y) + k(y,y)}.
       |                 ^
checkRd: (-1) k2d.Rd:34: Lost braces
    34 | d_n(x,y) = 1 - k(x,y)/sqrt{ k(x,x)k(y,y)},
       |                           ^
checkRd: (-1) k2d.Rd:26: Lost braces
    26 | d_ND(x,y) = sqrt{ k(x,x) - 2k(x,y) + k(y,y)}.
       |                 ^
checkRd: (-1) k2d.Rd:34: Lost braces
    34 | d_n(x,y) = 1 - k(x,y)/sqrt{ k(x,x)k(y,y)},
       |                           ^
checkRd: (-1) k2d.Rd:26: Lost braces
    26 | d_ND(x,y) = sqrt{ k(x,x) - 2k(x,y) + k(y,y)}.
       |                 ^
checkRd: (-1) k2d.Rd:34: Lost braces
    34 | d_n(x,y) = 1 - k(x,y)/sqrt{ k(x,x)k(y,y)},
       |                           ^
checkRd: (-1) k2d.Rd:26: Lost braces
    26 | d_ND(x,y) = sqrt{ k(x,x) - 2k(x,y) + k(y,y)}.
       |                 ^
checkRd: (-1) k2d.Rd:34: Lost braces
    34 | d_n(x,y) = 1 - k(x,y)/sqrt{ k(x,x)k(y,y)},
       |                           ^
checkRd: (-1) k2d.Rd:26: Lost braces
    26 | d_ND(x,y) = sqrt{ k(x,x) - 2k(x,y) + k(y,y)}.
       |                 ^
checkRd: (-1) k2d.Rd:34: Lost braces
    34 | d_n(x,y) = 1 - k(x,y)/sqrt{ k(x,x)k(y,y)},
       |                           ^
checkRd: (-1) k2d.Rd:26: Lost braces
    26 | d_ND(x,y) = sqrt{ k(x,x) - 2k(x,y) + k(y,y)}.
       |                 ^
checkRd: (-1) k2d.Rd:34: Lost braces
    34 | d_n(x,y) = 1 - k(x,y)/sqrt{ k(x,x)k(y,y)},
       |                           ^
checkRd: (-1) k2d.Rd:26: Lost braces
    26 | d_ND(x,y) = sqrt{ k(x,x) - 2k(x,y) + k(y,y)}.
       |                 ^
checkRd: (-1) k2d.Rd:34: Lost braces
    34 | d_n(x,y) = 1 - k(x,y)/sqrt{ k(x,x)k(y,y)},
       |                           ^