Dear List I have the following example. \setuppapersize[A4] \mainlanguage[de] \starttext Wir können sogar die gesamte Matrix A über ihre Einträge mit Hilfe der Indizes definieren, indem wir schreiben \startformula A_{ij}=5i \stopformula \starttext Why is there no formula in the pdf? And is that right with A{ij} After compiling i get the following Command Line: context.exe --synctex=-1 "Example1.tex" Startup Folder: C:\Users\Administrator\Documents\My Documents resolvers | formats | executing runner 'run luatex format': C:/texlive/2020/bin/win32/luatex --jobname="Example1" --fmt=C:/texlive/2020/texmf-var/luatex-cache/context/a86c089b384a3076dc514ba966a1fac9/formats/luatex/cont-en.fmt --lua=C:/texlive/2020/texmf-var/luatex-cache/context/a86c089b384a3076dc514ba966a1fac9/formats/luatex/cont-en.lui cont-yes.mkiv --c:currentrun=1 --c:fulljobname="./Example1.tex" --c:input="./Example1.tex" --c:kindofrun=1 --c:maxnofruns=9 --c:synctex="-1" --c:texmfbinpath="C:/texlive/2020/bin/win32" This is LuaTeX, Version 1.12.0 (TeX Live 2020/W32TeX) system commands enabled. open source > level 1, order 1, name 'C:/texlive/2020/texmf-dist/tex/context/base/mkiv/cont-yes.mkiv' system > system > ConTeXt ver: 2020.03.10 14:44 MKIV beta fmt: 2021.1.18 int: english/english system > system > 'cont-new.mkiv' loaded open source > level 2, order 2, name 'C:/texlive/2020/texmf-dist/tex/context/base/mkiv/cont-new.mkiv' system > beware: some patches loaded from cont-new.mkiv close source > level 2, order 2, name 'C:/texlive/2020/texmf-dist/tex/context/base/mkiv/cont-new.mkiv' system > files > jobname 'Example1', input './Example1', result 'Example1' fonts > latin modern fonts are not preloaded languages > language 'en' is active system > synctex functionality is enabled, expect 5-10 pct runtime overhead! open source > level 2, order 3, name 'C:/Users/Administrator/Documents/My Documents/Example1.tex' modules > 'amsl' is not found fonts > preloading latin modern fonts (second stage) fonts > 'fallback modern-designsize rm 12pt' is loaded backend > xmp > using file 'C:/texlive/2020/texmf-dist/tex/context/base/mkiv/lpdf-pdx.xml' pages > flushing realpage 1, userpage 1, subpage 1 close source > level 2, order 3, name 'C:/Users/Administrator/Documents/My Documents/Example1.tex' close source > level 1, order 3, name 'C:/texlive/2020/texmf-dist/tex/context/base/mkiv/cont-yes.mkiv' mkiv lua stats > used config file: selfautoparent:/texmfcnf.lua;selfautoparent:/texmf-dist/web2c/texmfcnf.lua mkiv lua stats > used cache path: C:/texlive/2020/texmf-var/luatex-cache/context/a86c089b384a3076dc514ba966a1fac9 mkiv lua stats > resource resolver: loadtime 0.165 seconds, 1 scans with scantime 0.003 seconds, 0 shared scans, 12 found files, scanned paths: C:/Users/Administrator/.texlive2020/texmf-config mkiv lua stats > stored bytecode data: 450 modules (0.395 sec), 93 tables (0.013 sec), 543 chunks (0.408 sec) mkiv lua stats > traced context: maxstack: 1398, freed: 0, unreachable: 1398 mkiv lua stats > cleaned up reserved nodes: 56 nodes, 9 lists of 442 mkiv lua stats > node memory usage: 11 attribute, 4 attribute_list, 1 glue, 51 glue_spec, 3 kern, 2 penalty, 2 temp, 2 user_defined mkiv lua stats > node list callback tasks: 8 unique task lists, 7 instances (re)created, 39 calls mkiv lua stats > synctex tracing: 2 referenced files, 4 files ignored, 5 objects flushed, logfile: Example1.synctex mkiv lua stats > driver time: 0.134 seconds mkiv lua stats > used backend: pdf (backend for directly generating pdf output) mkiv lua stats > jobdata time: 0.002 seconds saving, 0.001 seconds loading mkiv lua stats > callbacks: internal: 136, file: 144, direct: 2, late: 6, function 507, total: 795 mkiv lua stats > randomizer: resumed with value 0.087860107421875 mkiv lua stats > positions: 2 collected, 2 regular, 0 special mkiv lua stats > loaded tex modules: 1 requested, all missing (*-amsl) mkiv lua stats > result saved in file: Example1.pdf, compresslevel 3, objectcompresslevel 1 mkiv lua stats > loaded patterns: en::1, load time: 0.000 mkiv lua stats > loaded fonts: 2 files: latinmodern-math.otf, lmroman12-regular.otf mkiv lua stats > font engine: otf 3.111, afm 1.513, tfm 1.000, 7 instances, 3 shared in backend, 3 common vectors, 0 common hashes, load time 0.208 seconds mkiv lua stats > used platform: mswin, type: windows, binary subtree: bin mkiv lua stats > used engine: luatex version: 1.12, functionality level: 7306, banner: this is luatex, version 1.12.0 (tex live 2020/w32tex) mkiv lua stats > control sequences: 45874 of 65536 + 100000 mkiv lua stats > lua properties: engine: lua 5.3, used memory: 125 MB, ctx: 124 MB, max: unknown MB, hash chars: min(32,40), symbol mask: utf (τεχ) mkiv lua stats > runtime: 0.813 seconds, 1 processed pages, 1 shipped pages, 1.230 pages/second system | total runtime: 1.189 seconds _____________________________________________________________________ ConTeXt Compilation Report (Pages: 1) Errors: 0 Warnings: 0 Bad Boxes: 0 * Thanks for helping Uschi