-\providecommand*{\intervaloo}[2]{ \left({#1},{#2}\right) } % open-open
-\providecommand*{\intervaloc}[2]{ \left({#1},{#2}\right] } % open-closed
-\providecommand*{\intervalco}[2]{ \left[{#1},{#2}\right) } % closed-open
-\providecommand*{\intervalcc}[2]{ \left[{#1},{#2}\right] } % closed-closed
+\newcommand*{\intervaloo}[2]{ \left({#1},{#2}\right) } % open-open
+\newcommand*{\intervaloc}[2]{ \left({#1},{#2}\right] } % open-closed
+\newcommand*{\intervalco}[2]{ \left[{#1},{#2}\right) } % closed-open
+\newcommand*{\intervalcc}[2]{ \left[{#1},{#2}\right] } % closed-closed
+
+
+\fi