KATIE(1) The Regina Handbook KATIE(1) (NAME) katie - - - (SYNOPSIS) katie pd_code framing_vector [ -3, --dim3 | -4, --dim4 ] [ -g, --graph ] [ -V, --verbose ] katie { -v, --version | -?, --help } (DESCRIPTION) - - . - (Dehn surgery) . - - ( ) . Katie : ( ) ( / <<>> ). o (PD) SnapPy . PLink SnapPy PD SnapPy InfoPD Code . o 'x' '.' . : PD . Katie . Katie . (OPTIONS) -3, --dim3 - . --dim3 --dim4 - . -4, --dim4 - -. --dim3 --dim4 . -g, --graph . - (tetrahedron) - (pentachoron) . c c . -V, --verbose . -v, --version Regina . -?, --help . (EXAMPLES) - + . example$ katie "[(6,4,1,3),(4,2,5,1),(2,6,3,5)]" "1" -3 Writhes: Component 0: 2-handle, writhe 1 Here is the isomorphism signature: GLvvQvPvALvzMAQAvAQQQPccgfekjp... example$ - + . example$ katie "[(1,1,2,2)]" "1" Writhes: Component 0: 2-handle, writhe 1 Here is the isomorphism signature: mLvAwAQAPQQcfffhijgjgjkkklklll... example$ - . example$ katie "[(4,8,1,9),(9,3,10,4),(1,5,2,6),(6,2,7,3),(7,5,8,10)]" "x 0" Writhes: Component 0: 1-handle (0) Component 1: 2-handle, writhe 0 Here is the isomorphism signature: SLvAvAAwvvALMQQPvPvPMQwQAQMAvQ... example$ (MACOS USERS) (drag-and-drop app bundle) . Regina Applications /Applications/Regina.app/Contents/MacOS/katie . (WINDOWS USERS) Program Files Program Files (x86) . c:\Program Files\Regina\Regina 7.4.1\bin\katie.exe . (AUTHORS) Rhuaidi Burke . Regina . 25 August 2025 KATIE(1)