For openSUSE Tumbleweed Pure run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:badshah400:branches:science/openSUSE_Tumbleweed_Pure/home:badshah400:branches:science.repo
zypper refresh
zypper install cadabra2
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:badshah400:branches:science/openSUSE_Tumbleweed/home:badshah400:branches:science.repo
zypper refresh
zypper install cadabra2
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:badshah400:branches:science/16.0/home:badshah400:branches:science.repo
zypper refresh
zypper install cadabra2