letter (constructor identifiers). Identifiers are case sensitive: name, naMe, and Name are three distinct identifiers (the first two are variable identifiers, the last is a constructor identifier). 10 decimal . decimal [exponent] | decimal exponent exponent → (e | E) [+ | -] decimal There are two distinct kinds of numeric literals: integer and floating. Integer literals may be given in decimal (the default) _ -> e′ } (p) case (K′ e1 . . . em) of { K x1 . . . xn -> e; _ -> e′ } = e′ where K and K′ are distinct data constructors of arity n and m, respectively (q) case (K e1 . . . en) of { K x1 . . . xn ->

== (λ { true → true ; false → false }) because this is equivalent to extlam1 ≡ extlam2 for some distinct fresh names extlam1 and extlam2. Currently the where and with constructions are not allowed in (the function symbol, or a constructor applied to fully general parameters (i.e. the parameters must be distinct variables) Each variable x₁, …, xₖ occurs at least once in a pattern position in p₁ ... pₙ (see following patterns are supported: x y₁ ... yₙ, where x is a pattern variable and y₁, …, yₙ are distinct variables that are bound locally in the pattern f p₁ ... pₙ, where f is a postulate, a defined function

== (λ { true → true ; false → false }) because this is equivalent to extlam1 ≡ extlam2 for some distinct fresh names extlam1 and extlam2. Currently the where and with constructions are not allowed in (the function symbol, or a constructor applied to fully general parameters (i.e. the parameters must be distinct variables) Each variable x₁, …, xₖ occurs at least once in a pattern position in p₁ ... pₙ (see following patterns are supported: x y₁ ... yₙ, where x is a pattern variable and y₁, …, yₙ are distinct variables that are bound locally in the pattern f p₁ ... pₙ, where f is a postulate, a defined function

== (λ { true → true ; false → false }) because this is equivalent to extlam1 ≡ extlam2 for some distinct fresh names extlam1 and extlam2. Currently the where and with constructions are not allowed in (the function symbol, or a constructor applied to fully general parameters (i.e. the parameters must be distinct variables) Each variable x₁, …, xₖ occurs at least once in a pattern position in p₁ ... pₙ (see following patterns are supported: x y₁ ... yₙ, where x is a pattern variable and y₁, …, yₙ are distinct variables that are bound locally in the pattern f p₁ ... pₙ, where f is a postulate, a defined function

== (λ { true → true ; false → false }) because this is equivalent to extlam1 ≡ extlam2 for some distinct fresh names extlam1 and extlam2. Currently the where and with constructions are not allowed in (the function symbol, or a constructor applied to fully general parameters (i.e. the parameters must be distinct variables) Each variable x₁, …, xₖ occurs at least once in a pattern position in p₁ ... pₙ (see following patterns are supported: x y₁ ... yₙ, where x is a pattern variable and y₁, …, yₙ are distinct variables that are bound locally in the pattern f p₁ ... pₙ, where f is a postulate, a defined function

== (? { true → true ; false → false }) because this is equivalent to extlam1 ≡ extlam2 for some distinct fresh names extlam1 and extlam2. Cur- rently the where and with constructions are not allowed in function symbol, or a constructor applied to fully general parameters (i.e. the param- eters must be distinct variables) • Each variable x1, ..., x? occurs at least once in a pattern position in p1 ... p? following patterns are supported: • x y1 ... y?, where x is a pattern variable and y1, ..., y? are distinct variables that are bound locally in the pattern • f p1 ... p?, where f is a postulate, a defined

== (? { true → true ; false → false }) because this is equivalent to extlam1 ≡ extlam2 for some distinct fresh names extlam1 and extlam2. Cur- rently the where and with constructions are not allowed in function symbol, or a constructor applied to fully general parameters (i.e. the param- eters must be distinct variables) • Each variable x1, ..., x? occurs at least once in a pattern position in p1 ... p? following patterns are supported: • x y1 ... y?, where x is a pattern variable and y1, ..., y? are distinct variables that are bound locally in the pattern • f p1 ... p?, where f is a postulate, a defined

== (? { true → true ; false → false }) because this is equivalent to extlam1 ≡ extlam2 for some distinct fresh names extlam1 and extlam2. Cur- rently the where and with constructions are not allowed in function symbol, or a constructor applied to fully general parameters (i.e. the param- eters must be distinct variables) • Each variable x1, ..., x? occurs at least once in a pattern position in p1 ... p? following patterns are supported: • x y1 ... y?, where x is a pattern variable and y1, ..., y? are distinct variables that are bound locally in the pattern • f p1 ... p?, where f is a postulate, a defined

== (? { true → true ; false → false }) because this is equivalent to extlam1 ≡ extlam2 for some distinct fresh names extlam1 and extlam2. Cur- rently the where and with constructions are not allowed in function symbol, or a constructor applied to fully general parameters (i.e. the param- eters must be distinct variables) • Each variable x1, ..., x? occurs at least once in a pattern position in p1 ... p? following patterns are supported: • x y1 ... y?, where x is a pattern variable and y1, ..., y? are distinct variables that are bound locally in the pattern • f p1 ... p?, where f is a postulate, a defined

== (λ { true → true ; false → false }) because this is equivalent to extlam1 ≡ extlam2 for some distinct fresh names extlam1 and extlam2. Currently the where and with constructions are not allowed in (the function symbol, or a constructor applied to fully general parameters (i.e. the parameters must be distinct variables) Each variable x₁, …, xₖ occurs at least once in a pattern position in p₁ ... pₙ (see following patterns are supported: x y₁ ... yₙ, where x is a pattern variable and y₁, …, yₙ are distinct variables that are bound locally in the pattern f p₁ ... pₙ, where f is a postulate, a defined function