diff --git a/algebra.ind b/algebra.ind
index 38ecc74..5bbbc89 100644
--- a/algebra.ind
+++ b/algebra.ind
@@ -233,15 +233,15 @@
   \item \IeC {\cyro }\IeC {\cyrg }\IeC {\cyrr }\IeC {\cyra }\IeC {\cyrn }\IeC {\cyri }\IeC {\cyrch }\IeC {\cyre }\IeC {\cyrn }\IeC {\cyri }\IeC {\cyre }, \hyperpage{8}
   \item \IeC {\cyro }\IeC {\cyrd }\IeC {\cyrn }\IeC {\cyro }\IeC {\cyrr }\IeC {\cyro }\IeC {\cyrd }\IeC {\cyrn }\IeC {\cyro }\IeC {\cyre } \IeC {\cyro }\IeC {\cyrt }\IeC {\cyro }\IeC {\cyrb }\IeC {\cyrr }\IeC {\cyra }\IeC {\cyrzh }\IeC {\cyre }\IeC {\cyrn }\IeC {\cyri }\IeC {\cyre }, \hyperpage{217}
   \item \IeC {\cyro }\IeC {\cyrp }\IeC {\cyre }\IeC {\cyrr }\IeC {\cyra }\IeC {\cyrt }\IeC {\cyro }\IeC {\cyrr }, \hyperpage{136}
-    \subitem \IeC {\cyrk }\IeC {\cyro }\IeC {\cyrs }\IeC {\cyro }\IeC {\cyrs }\IeC {\cyri }\IeC {\cyrm }\IeC {\cyrm }\IeC {\cyre }\IeC {\cyrt }\IeC {\cyrr }\IeC {\cyri }\IeC {\cyrch }\IeC {\cyre }\IeC {\cyrs }\IeC {\cyrk }\IeC {\cyri }\IeC {\cyrishrt }, \hyperpage{189}
+    \subitem \IeC {\cyrk }\IeC {\cyro }\IeC {\cyrs }\IeC {\cyro }\IeC {\cyrs }\IeC {\cyri }\IeC {\cyrm }\IeC {\cyrm }\IeC {\cyre }\IeC {\cyrt }\IeC {\cyrr }\IeC {\cyri }\IeC {\cyrch }\IeC {\cyre }\IeC {\cyrs }\IeC {\cyrk }\IeC {\cyri }\IeC {\cyrishrt }, \hyperpage{190}
     \subitem \IeC {\cyrl }\IeC {\cyri }\IeC {\cyrn }\IeC {\cyre }\IeC {\cyrishrt }\IeC {\cyrn }\IeC {\cyrery }\IeC {\cyrishrt }, \hyperpage{136}
-    \subitem \IeC {\cyrn }\IeC {\cyre }\IeC {\cyro }\IeC {\cyrt }\IeC {\cyrr }\IeC {\cyri }\IeC {\cyrc }\IeC {\cyra }\IeC {\cyrt }\IeC {\cyre }\IeC {\cyrl }\IeC {\cyrsftsn }\IeC {\cyrn }\IeC {\cyro } \IeC {\cyro }\IeC {\cyrp }\IeC {\cyrr }\IeC {\cyre }\IeC {\cyrd }\IeC {\cyre }\IeC {\cyrl }\IeC {\cyre }\IeC {\cyrn }\IeC {\cyrn }\IeC {\cyrery }\IeC {\cyrishrt }, \hyperpage{193}
+    \subitem \IeC {\cyrn }\IeC {\cyre }\IeC {\cyro }\IeC {\cyrt }\IeC {\cyrr }\IeC {\cyri }\IeC {\cyrc }\IeC {\cyra }\IeC {\cyrt }\IeC {\cyre }\IeC {\cyrl }\IeC {\cyrsftsn }\IeC {\cyrn }\IeC {\cyro } \IeC {\cyro }\IeC {\cyrp }\IeC {\cyrr }\IeC {\cyre }\IeC {\cyrd }\IeC {\cyre }\IeC {\cyrl }\IeC {\cyre }\IeC {\cyrn }\IeC {\cyrn }\IeC {\cyrery }\IeC {\cyrishrt }, \hyperpage{194}
     \subitem \IeC {\cyrn }\IeC {\cyro }\IeC {\cyrr }\IeC {\cyrm }\IeC {\cyra }\IeC {\cyrl }\IeC {\cyrsftsn }\IeC {\cyrn }\IeC {\cyrery }\IeC {\cyrishrt }, \hyperpage{183}
-    \subitem \IeC {\cyro }\IeC {\cyrr }\IeC {\cyrt }\IeC {\cyro }\IeC {\cyrg }\IeC {\cyro }\IeC {\cyrn }\IeC {\cyra }\IeC {\cyrl }\IeC {\cyrsftsn }\IeC {\cyrn }\IeC {\cyrery }\IeC {\cyrishrt }, \hyperpage{189}
-    \subitem \IeC {\cyrp }\IeC {\cyro }\IeC {\cyrl }\IeC {\cyro }\IeC {\cyrzh }\IeC {\cyri }\IeC {\cyrt }\IeC {\cyre }\IeC {\cyrl }\IeC {\cyrsftsn }\IeC {\cyrn }\IeC {\cyro } \IeC {\cyro }\IeC {\cyrp }\IeC {\cyrr }\IeC {\cyre }\IeC {\cyrd }\IeC {\cyre }\IeC {\cyrl }\IeC {\cyre }\IeC {\cyrn }\IeC {\cyrn }\IeC {\cyrery }\IeC {\cyrishrt }, \hyperpage{193}
-    \subitem \IeC {\cyrs }\IeC {\cyra }\IeC {\cyrm }\IeC {\cyro }\IeC {\cyrs }\IeC {\cyro }\IeC {\cyrp }\IeC {\cyrr }\IeC {\cyrya }\IeC {\cyrzh }\IeC {\cyre }\IeC {\cyrn }\IeC {\cyrn }\IeC {\cyrery }\IeC {\cyrishrt }, \hyperpage{189}
+    \subitem \IeC {\cyro }\IeC {\cyrr }\IeC {\cyrt }\IeC {\cyro }\IeC {\cyrg }\IeC {\cyro }\IeC {\cyrn }\IeC {\cyra }\IeC {\cyrl }\IeC {\cyrsftsn }\IeC {\cyrn }\IeC {\cyrery }\IeC {\cyrishrt }, \hyperpage{190}
+    \subitem \IeC {\cyrp }\IeC {\cyro }\IeC {\cyrl }\IeC {\cyro }\IeC {\cyrzh }\IeC {\cyri }\IeC {\cyrt }\IeC {\cyre }\IeC {\cyrl }\IeC {\cyrsftsn }\IeC {\cyrn }\IeC {\cyro } \IeC {\cyro }\IeC {\cyrp }\IeC {\cyrr }\IeC {\cyre }\IeC {\cyrd }\IeC {\cyre }\IeC {\cyrl }\IeC {\cyre }\IeC {\cyrn }\IeC {\cyrn }\IeC {\cyrery }\IeC {\cyrishrt }, \hyperpage{194}
+    \subitem \IeC {\cyrs }\IeC {\cyra }\IeC {\cyrm }\IeC {\cyro }\IeC {\cyrs }\IeC {\cyro }\IeC {\cyrp }\IeC {\cyrr }\IeC {\cyrya }\IeC {\cyrzh }\IeC {\cyre }\IeC {\cyrn }\IeC {\cyrn }\IeC {\cyrery }\IeC {\cyrishrt }, \hyperpage{190}
     \subitem \IeC {\cyrs }\IeC {\cyro }\IeC {\cyrh }\IeC {\cyrr }\IeC {\cyra }\IeC {\cyrn }\IeC {\cyrya }\IeC {\cyre }\IeC {\cyrt } \IeC {\cyrs }\IeC {\cyrk }\IeC {\cyra }\IeC {\cyrl }\IeC {\cyrya }\IeC {\cyrr }\IeC {\cyrn }\IeC {\cyro }\IeC {\cyre } \IeC {\cyrp }\IeC {\cyrr }\IeC {\cyro }\IeC {\cyri }\IeC {\cyrz }\IeC {\cyrv }\IeC {\cyre }\IeC {\cyrd }\IeC {\cyre }\IeC {\cyrn }\IeC {\cyri }\IeC {\cyre }, \hyperpage{191}
-    \subitem \IeC {\cyru }\IeC {\cyrn }\IeC {\cyri }\IeC {\cyrt }\IeC {\cyra }\IeC {\cyrr }\IeC {\cyrn }\IeC {\cyrery }\IeC {\cyrishrt }, \hyperpage{189}
+    \subitem \IeC {\cyru }\IeC {\cyrn }\IeC {\cyri }\IeC {\cyrt }\IeC {\cyra }\IeC {\cyrr }\IeC {\cyrn }\IeC {\cyrery }\IeC {\cyrishrt }, \hyperpage{190}
   \item \IeC {\cyro }\IeC {\cyrp }\IeC {\cyre }\IeC {\cyrr }\IeC {\cyra }\IeC {\cyrc }\IeC {\cyri }\IeC {\cyrya }
     \subitem \IeC {\cyra }\IeC {\cyrs }\IeC {\cyrs }\IeC {\cyro }\IeC {\cyrc }\IeC {\cyri }\IeC {\cyra }\IeC {\cyrt }\IeC {\cyri }\IeC {\cyrv }\IeC {\cyrn }\IeC {\cyra }\IeC {\cyrya }, \hyperpage{14}
     \subitem \IeC {\cyrb }\IeC {\cyri }\IeC {\cyrn }\IeC {\cyra }\IeC {\cyrr }\IeC {\cyrn }\IeC {\cyra }\IeC {\cyrya }, \hyperpage{14}
diff --git a/algebra.pdf b/algebra.pdf
index b690bd8..532161f 100644
Binary files a/algebra.pdf and b/algebra.pdf differ
diff --git a/algebra.tex b/algebra.tex
index ce20253..a30def5 100644
--- a/algebra.tex
+++ b/algebra.tex
@@ -136,7 +136,7 @@
 % Халмош, Конечномерные векторные пространства.
 
 Автор выражает свою благодарность всем слушателям данного курса, и особенно
-Владиславу Комарову, который указал на большое количество
+Владиславу Комарову и Сергею Яскевичу, которые указали на большое количество
 опечаток и неточностей.
 
 \vfill\eject