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134 |
134 |
135 section {* Basic specification elements *} |
135 section {* Basic specification elements *} |
136 |
136 |
137 text {* |
137 text {* |
138 \begin{matharray}{rcll} |
138 \begin{matharray}{rcll} |
139 @{command_def "axiomatization"} & : & \isarkeep{local{\dsh}theory} & (axiomatic!)\\ |
139 @{command_def "axiomatization"} & : & \isarkeep{theory} & (axiomatic!)\\ |
140 @{command_def "definition"} & : & \isarkeep{local{\dsh}theory} \\ |
140 @{command_def "definition"} & : & \isarkeep{local{\dsh}theory} \\ |
141 @{attribute_def "defn"} & : & \isaratt \\ |
141 @{attribute_def "defn"} & : & \isaratt \\ |
142 @{command_def "abbreviation"} & : & \isarkeep{local{\dsh}theory} \\ |
142 @{command_def "abbreviation"} & : & \isarkeep{local{\dsh}theory} \\ |
143 @{command_def "print_abbrevs"}@{text "\<^sup>*"} & : & \isarkeep{theory~|~proof} \\ |
143 @{command_def "print_abbrevs"}@{text "\<^sup>*"} & : & \isarkeep{theory~|~proof} \\ |
144 @{command_def "notation"} & : & \isarkeep{local{\dsh}theory} \\ |
144 @{command_def "notation"} & : & \isarkeep{local{\dsh}theory} \\ |
176 simultaneously and states axiomatic properties for these. The |
176 simultaneously and states axiomatic properties for these. The |
177 constants are marked as being specified once and for all, which |
177 constants are marked as being specified once and for all, which |
178 prevents additional specifications being issued later on. |
178 prevents additional specifications being issued later on. |
179 |
179 |
180 Note that axiomatic specifications are only appropriate when |
180 Note that axiomatic specifications are only appropriate when |
181 declaring a new logical system. Normal applications should only use |
181 declaring a new logical system; axiomatic specifications are |
182 definitional mechanisms! |
182 restricted to global theory contexts. Normal applications should |
|
183 only use definitional mechanisms! |
183 |
184 |
184 \item [@{command "definition"}~@{text "c \<WHERE> eq"}] produces an |
185 \item [@{command "definition"}~@{text "c \<WHERE> eq"}] produces an |
185 internal definition @{text "c \<equiv> t"} according to the specification |
186 internal definition @{text "c \<equiv> t"} according to the specification |
186 given as @{text eq}, which is then turned into a proven fact. The |
187 given as @{text eq}, which is then turned into a proven fact. The |
187 given proposition may deviate from internal meta-level equality |
188 given proposition may deviate from internal meta-level equality |