diff --git a/lepaper/arrayscat.lyx b/lepaper/arrayscat.lyx
index 8fa5dea..7eeb2cf 100644
--- a/lepaper/arrayscat.lyx
+++ b/lepaper/arrayscat.lyx
@@ -49,7 +49,7 @@
 \pdf_colorlinks false
 \pdf_backref false
 \pdf_pdfusetitle true
-\papersize default
+\papersize a4paper
 \use_geometry false
 \use_package amsmath 2
 \use_package amssymb 1
diff --git a/lepaper/intro.lyx b/lepaper/intro.lyx
index 30c98c7..e9f98f0 100644
--- a/lepaper/intro.lyx
+++ b/lepaper/intro.lyx
@@ -1,29 +1,37 @@
-#LyX 2.1 created this file. For more info see http://www.lyx.org/
-\lyxformat 474
+#LyX 2.4 created this file. For more info see https://www.lyx.org/
+\lyxformat 583
 \begin_document
 \begin_header
+\save_transient_properties true
+\origin unavailable
 \textclass article
 \use_default_options true
 \maintain_unincluded_children false
-\language finnish
+\language english
 \language_package default
-\inputencoding auto
-\fontencoding global
-\font_roman TeX Gyre Pagella
-\font_sans default
-\font_typewriter default
-\font_math auto
+\inputencoding utf8
+\fontencoding auto
+\font_roman "default" "TeX Gyre Pagella"
+\font_sans "default" "default"
+\font_typewriter "default" "default"
+\font_math "auto" "auto"
 \font_default_family default
-\use_non_tex_fonts true
+\use_non_tex_fonts false
 \font_sc false
-\font_osf true
-\font_sf_scale 100
-\font_tt_scale 100
+\font_roman_osf true
+\font_sans_osf false
+\font_typewriter_osf false
+\font_sf_scale 100 100
+\font_tt_scale 100 100
+\use_microtype false
+\use_dash_ligatures false
 \graphics default
-\default_output_format pdf4
+\default_output_format default
 \output_sync 0
 \bibtex_command default
 \index_command default
+\float_placement class
+\float_alignment class
 \paperfontsize default
 \spacing single
 \use_hyperref true
@@ -58,6 +66,8 @@
 \suppress_date false
 \justification true
 \use_refstyle 1
+\use_minted 0
+\use_lineno 0
 \index Index
 \shortcut idx
 \color #008000
@@ -66,10 +76,14 @@
 \tocdepth 3
 \paragraph_separation indent
 \paragraph_indentation default
-\quotes_language swedish
+\is_math_indent 0
+\math_numbering_side default
+\quotes_style english
+\dynamic_quotes 0
 \papercolumns 1
 \papersides 1
 \paperpagestyle default
+\tablestyle default
 \tracking_changes false
 \output_changes false
 \html_math_output 0