Hello there, as you can see below I am defining a polynomial ring, an ideal and computing its Groebner Basis in a for loop (iterating threw different .xml files).
During the computation I set an alarm for 5s (in the example below still 60s) and let the program print a message in the error case. But since that happened the next computation raises an error by the groebner_basis() function. In the output below you can see that the first computation is successful, the seconds aborts and the third raises an error due to some kind of "basering" definition. Googling I came up with this ( http://www.gap-system.org/Manuals/pkg/singular/doc/chap1.html#X82260C8E82090E87, cp 1-7-5), because I am using the Singular algorithm to compute the Groebner Basis. But since I do not know how to fix this in Sage, I please for your help. Thanks for any answers. With best regards Fabian 1 Cassou_1.xml Multivariate Polynomial Ring in b, c, d, e over Rational Field Degree reverse lexicographic term order 1 loops, best of 1: 219.62 ms per loop 1 Cohn_2.xml Multivariate Polynomial Ring in t, x, y, z over Rational Field Degree reverse lexicographic term order abort after 60s 1 Curves.curve10_20.xml Multivariate Polynomial Ring in x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, u, v over Rational Field Degree reverse lexicographic term order // ** redefining i_par ** // ** redefining # ** // ** redefining P ** Exception RuntimeError: RuntimeError('Error raised calling singular function',) in 'sage.libs.singular.function.LibraryCallHandler.handle_call' ignored --------------------------------------------------------------------------- RuntimeError Traceback (most recent call last) /Applications/sage/local/lib/python2.7/site-packages/sage/all_cmdline.pycin <module>() ----> 1 load('/Users/kenneth/Desktop/example.sage') /Applications/sage/local/lib/python2.7/site-packages/sage/structure/sage_object.soin sage.structure.sage_object.load (sage/structure/sage_object.c:9540)() /Applications/sage/local/lib/python2.7/site-packages/sage/misc/preparser.pycin load(filename, globals, attach) * 1771* # Preparse in memory only for speed. * 1772* exec_file_is(fpath) -> 1773 exec preparse_file(open(fpath).read()) + "\n" in globals * 1774* elif fpath.endswith('.spyx') or fpath.endswith('.pyx'): * 1775* exec_file_is(fpath) /Applications/sage/local/lib/python2.7/site-packages/sage/all_cmdline.pycin <module>() /Applications/sage/local/lib/python2.7/site-packages/sage/misc/sage_timeit_class.soin sage.misc.sage_timeit_class.SageTimeit.__call__ (sage/misc/sage_timeit_class.c:1177)() /Applications/sage/local/lib/python2.7/site-packages/sage/misc/sage_timeit_class.soin sage.misc.sage_timeit_class.SageTimeit.eval (sage/misc/sage_timeit_class.c:965)() /Applications/sage/local/lib/python2.7/site-packages/sage/misc/sage_timeit.pycin sage_timeit(stmt, globals_dict, preparse, number, repeat, precision, seconds) * 241* break * 242* --> 243 series = [s/number for s in timer.repeat(repeat, number)] * 244* best = min(series) * 245* /Applications/sage/local/lib/python/timeit.pyc in repeat(self, repeat, number) * 221* r = [] * 222* for i in range(repeat): --> 223 t = self.timeit(number) * 224* r.append(t) * 225* return r /Applications/sage/local/lib/python/timeit.pyc in timeit(self, number) * 193* gc.disable() * 194* try: --> 195 timing = self.inner(it, self.timer) * 196* finally: * 197* if gcold: /Applications/sage/local/lib/python2.7/site-packages/sage/all_cmdline.pycin inner(_it, _timer) /Applications/sage/local/lib/python2.7/site-packages/sage/misc/cachefunc.soin sage.misc.cachefunc.CachedMethodCaller.__call__ (sage/misc/cachefunc.c:9194)() /Applications/sage/local/lib/python2.7/site-packages/sage/misc/cachefunc.soin sage.misc.cachefunc.CachedMethod._instance_call (sage/misc/cachefunc.c:11887)() /Applications/sage/local/lib/python2.7/site-packages/sage/rings/polynomial/multi_polynomial_ideal.pycin groebner_basis(self, algorithm, deg_bound, mult_bound, prot, *args, **kwds) * 3825* if algorithm is '': * 3826* try: -> 3827 gb = self._groebner_basis_libsingular("groebner",deg_bound =deg_bound, mult_bound=mult_bound, *args, **kwds) * 3828* except (TypeError,NameError) as msg: # conversion to Singular not supported * 3829* try: /Applications/sage/local/lib/python2.7/site-packages/sage/rings/polynomial/multi_polynomial_ideal.pycin wrapper(*args, **kwds) * 503* """ * 504* with LibSingularDefaultContext(): --> 505 return func(*args, **kwds) * 506* return wrapper * 507* /Applications/sage/local/lib/python2.7/site-packages/sage/rings/polynomial/multi_polynomial_ideal.pycin _groebner_basis_libsingular(self, algorithm, *args, **kwds) * 836* S = slimgb_libsingular(self) * 837* elif algorithm == "groebner": --> 838 S = groebner(self) * 839* else: * 840* try: /Applications/sage/local/lib/python2.7/site-packages/sage/libs/singular/function.soin sage.libs.singular.function.SingularFunction.__call__ (sage/libs/singular/function.cpp:13039)() /Applications/sage/local/lib/python2.7/site-packages/sage/libs/singular/function.soin sage.libs.singular.function.call_function (sage/libs/singular/function.cpp:14576)() RuntimeError: Error in Singular function call 'groebner': `basering` is undefined error occurred in or before standard.lib::groebner line 887: ` def P=basering;` -- You received this message because you are subscribed to the Google Groups "sage-support" group. 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