This class represents the totally antisymmetric epsilon tensor. More...
#include <tensor.h>
Public Member Functions | |
| tensepsilon (bool minkowski, bool pos_sig) | |
| bool | info (unsigned inf) const |
| Information about the object. | |
| ex | eval_indexed (const basic &i) const |
| Automatic symbolic evaluation of an indexed epsilon tensor. | |
| bool | contract_with (exvector::iterator self, exvector::iterator other, exvector &v) const |
| Contraction of epsilon tensor with something else. | |
| void | archive (archive_node &n) const |
| Save (a.k.a. | |
| void | read_archive (const archive_node &n, lst &syms) |
| Read (a.k.a. | |
Protected Member Functions | |
| unsigned | return_type () const |
| void | do_print (const print_context &c, unsigned level) const |
| Default output to stream. | |
| void | do_print_latex (const print_latex &c, unsigned level) const |
Private Attributes | |
| bool | minkowski |
| If true, tensor is in Minkowski-type space. | |
| bool | pos_sig |
| If true, the metric is assumed to be diag(-1,1,1...). | |
Detailed Description
This class represents the totally antisymmetric epsilon tensor.
If indexed, all indices must be of the same type and their number must be equal to the dimension of the index space.
Constructor & Destructor Documentation
| GiNaC::tensepsilon::tensepsilon | ( | bool | minkowski, |
| bool | pos_sig | ||
| ) |
Definition at line 87 of file tensor.cpp.
Member Function Documentation
| bool GiNaC::tensepsilon::info | ( | unsigned | inf | ) | const [virtual] |
Information about the object.
- See also:
- class info_flags
Reimplemented from GiNaC::basic.
Definition at line 188 of file tensor.cpp.
References GiNaC::info_flags::real.
Automatic symbolic evaluation of an indexed epsilon tensor.
Reimplemented from GiNaC::basic.
Definition at line 342 of file tensor.cpp.
References GiNaC::_ex0, GINAC_ASSERT, GiNaC::basic::hold(), GiNaC::is_zero(), minkowski, GiNaC::info_flags::nonnegint, GiNaC::basic::nops(), GiNaC::basic::op(), GiNaC::permutation_sign(), pos_sig, GiNaC::to_int(), and x.
| bool GiNaC::tensepsilon::contract_with | ( | exvector::iterator | self, |
| exvector::iterator | other, | ||
| exvector & | v | ||
| ) | const [virtual] |
Contraction of epsilon tensor with something else.
Reimplemented from GiNaC::basic.
Definition at line 542 of file tensor.cpp.
References GiNaC::_ex1, GiNaC::delta_tensor(), GINAC_ASSERT, GiNaC::lorentz_g(), GiNaC::metric_tensor(), minkowski, and pos_sig.
| void GiNaC::tensepsilon::archive | ( | archive_node & | n | ) | const [virtual] |
Save (a.k.a.
serialize) object into archive.
Reimplemented from GiNaC::basic.
Definition at line 120 of file tensor.cpp.
References GiNaC::archive_node::add_bool(), minkowski, and pos_sig.
| void GiNaC::tensepsilon::read_archive | ( | const archive_node & | n, |
| lst & | syms | ||
| ) | [virtual] |
Read (a.k.a.
deserialize) object from archive.
Reimplemented from GiNaC::basic.
Definition at line 112 of file tensor.cpp.
References GiNaC::archive_node::find_bool(), minkowski, and pos_sig.
| unsigned GiNaC::tensepsilon::return_type | ( | ) | const [inline, protected, virtual] |
Reimplemented from GiNaC::tensor.
Definition at line 171 of file tensor.h.
References GiNaC::return_types::commutative.
| void GiNaC::tensepsilon::do_print | ( | const print_context & | c, |
| unsigned | level | ||
| ) | const [protected] |
Default output to stream.
Reimplemented from GiNaC::basic.
| void GiNaC::tensepsilon::do_print_latex | ( | const print_latex & | c, |
| unsigned | level | ||
| ) | const [protected] |
Member Data Documentation
bool GiNaC::tensepsilon::minkowski [private] |
If true, tensor is in Minkowski-type space.
Otherwise it is in a Euclidean space.
Definition at line 177 of file tensor.h.
Referenced by archive(), contract_with(), eval_indexed(), and read_archive().
bool GiNaC::tensepsilon::pos_sig [private] |
If true, the metric is assumed to be diag(-1,1,1...).
Otherwise it is diag(1,-1,-1,...). This is only relevant if minkowski = true.
Definition at line 178 of file tensor.h.
Referenced by archive(), contract_with(), eval_indexed(), and read_archive().
The documentation for this class was generated from the following files: