--- a/src/HOL/Lattice/Lattice.thy Sat Jan 05 17:00:43 2019 +0100
+++ b/src/HOL/Lattice/Lattice.thy Sat Jan 05 17:24:33 2019 +0100
@@ -319,8 +319,8 @@
Given a structure with binary operations \<open>\<sqinter>\<close> and \<open>\<squnion>\<close>
such that (A), (C), and (AB) hold (cf.\
\S\ref{sec:lattice-algebra}). This structure represents a lattice,
- if the relation @{term "x \<sqsubseteq> y"} is defined as @{term "x \<sqinter> y = x"}
- (alternatively as @{term "x \<squnion> y = y"}). Furthermore, infimum and
+ if the relation \<^term>\<open>x \<sqsubseteq> y\<close> is defined as \<^term>\<open>x \<sqinter> y = x\<close>
+ (alternatively as \<^term>\<open>x \<squnion> y = y\<close>). Furthermore, infimum and
supremum with respect to this ordering coincide with the original
\<open>\<sqinter>\<close> and \<open>\<squnion>\<close> operations.
\<close>
@@ -331,7 +331,7 @@
subsubsection \<open>Linear orders\<close>
text \<open>
- Linear orders with @{term minimum} and @{term maximum} operations
+ Linear orders with \<^term>\<open>minimum\<close> and \<^term>\<open>maximum\<close> operations
are a (degenerate) example of lattice structures.
\<close>
@@ -368,8 +368,7 @@
qed
text \<open>
- The lattice operations on linear orders indeed coincide with @{term
- minimum} and @{term maximum}.
+ The lattice operations on linear orders indeed coincide with \<^term>\<open>minimum\<close> and \<^term>\<open>maximum\<close>.
\<close>
theorem meet_mimimum: "x \<sqinter> y = minimum x y"
@@ -578,8 +577,8 @@
text \<open>
\medskip A semi-morphisms is a function \<open>f\<close> that preserves the
- lattice operations in the following manner: @{term "f (x \<sqinter> y) \<sqsubseteq> f x
- \<sqinter> f y"} and @{term "f x \<squnion> f y \<sqsubseteq> f (x \<squnion> y)"}, respectively. Any of
+ lattice operations in the following manner: \<^term>\<open>f (x \<sqinter> y) \<sqsubseteq> f x
+ \<sqinter> f y\<close> and \<^term>\<open>f x \<squnion> f y \<sqsubseteq> f (x \<squnion> y)\<close>, respectively. Any of
these properties is equivalent with monotonicity.
\<close>