D

d (exterior differentiation) operator
    EXCALC package, 632
dd_groebner operator
    GROEBNER package, 633
Declaration, 634
    antisymmetric, 635
    array, 636
    complex_conjugates, 637
    even, 638
    factor, 639
    index, 640
    korder, 641
    linear, 642
    matrix, 643
    noncom, 644
    nonzero, 645
    notrealvalued, 646
    odd, 647
    off, 648
    on, 649
    operator, 650
    order, 651, 652
    precedence, 653
    print_indexed, 654
    print_noindexed, 655
    realvalued, 656
    remfac, 657
    selfconjugate, 658
    symmetric, 659
    mode handling, 660
decompose operator, 661
Decomposition
    partial fraction, 662
Default term order
    GROEBNER package, 663
defid statement
    RLfi package, 664
defindex statement
    RLfi package, 665
define command, 666
define_spaces command
    CANTENS package, 667, 668
Definite integration, 669
Definite integration (simple), 670
defint function
    AVECTOR package, 671
DEFINT package, 672
deflineint function
    AVECTOR package, 673
defn switch, 674, 675, 676
defpoly statement
    ARNUM package, 677
deg operator, 678
deg2dms numerical operator, 679
deg2rad numerical operator, 680
Degree, 681
degree arguments, 682
degree operator
    CALI package, 683
degree vectors
    CALI package, 684
degree!* symbolic procedure
    CALI package, 685
degreeorder procedure
    CALI package, 686
degreeorder!* symbolic procedure
    CALI package, 687
degsfromresolution operator
    CALI package, 688
del keyword
    CANTENS package, 689
del tensor
    CANTENS package, 690, 691
delete operator
    ASSIST package, 692
delete_all operator
    ASSIST package, 693
deleteunits operator
    CALI package, 694
deleteunits!* symbolic procedure
    CALI package, 695
dellastdigit operator
    ASSIST package, 696
delpair operator
    ASSIST package, 697
delsq operator
    AVECTOR package, 698
    ORTHOVEC package, 699
delta function
    CANTENS package, 700, 701
delta keyword
    CANTENS package, 702
delta operator
    CANTENS package, 703
delta tensor
    CANTENS package, 704, 705, 706, 707, 708
demo switch, 709
den operator, 710, 711
dep_var global variable
    CDE package, 712
depatom operator
    ASSIST package, 713
depend command, 714, 715, 716
    CANTENS package, 717, 718
depth operator
    ASSIST package, 719
depvarp operator
    ASSIST package, 720
deq(i) operator
    SPDE package, 721
der_deg_ordering operator
    CDE package, 722
Derivative
    of generic functions, 723, 724
    partial, 725
    variational, 726
derived_system operator
    EDS package, 727
DESIR package, 728
det operator, 729, 730
detectunits switch, 731, 732
Determinant
    in detm!*, 733
detidnum operator
    ASSIST package, 734
detm!* variable
    EXCALC package, 735
DETRAFO, 736
df operator, 737, 738
    CANTENS package, 739
df_odd operator
    CDE package, 740
dfint switch, 741
dfp operator
    DFPART package, 742
dfp_commute declaration
    DFPART package, 743
DFPART package, 744
dfprint switch, 745
diagonal operator
    LINALG package, 746
diagonalize operator
    SYMMETRY package, 747
Dicrescenzo, C., 748
diff operator
    LPDO package, 749
Differential geometry, 750
Differentiation, 751, 752, 753
    partial, 754
    vector, 755, 756
diffset operator
    ASSIST package, 757
Digamma function, 758, 759
dilog, 760, 761, 762
Dilog function, 763, 764, 765
dim operator
    CALI package, 766, 767
    EDS package, 768
dim!* symbolic procedure
    CALI package, 769
dim_grassmann_variety operator
    EDS package, 770
Dimension, 771
dimzerop operator
    CALI package, 772
dimzerop!* symbolic procedure
    CALI package, 773
Dirac \(\gamma \) matrix, 774
directsum operator
    CALI package, 775
disjoin operator
    EDS package, 776
dispjacobian switch, 777
Display, 778
display operator, 779
Display, graphical, 780
displayflag operator
    ASSIST package, 781
displayframe command
    EXCALC package, 782, 783
Displaying structure, 784
displayprop operator
    ASSIST package, 785
distribute switch, 786, 787
div operator
    AVECTOR package, 788
    ORTHOVEC package, 789
div switch, 790, 791
Divergence
    vector field, 792
divide operator, 793
divpol operator
    ASSIST package, 794
dlineint operator
    ORTHOVEC package, 795
dmode
    CALI package, 796
dms2deg numerical operator, 797
dms2rad numerical operator, 798
do keyword, 799, 800, 801, 802
Dollar sign, 803
Dolzmann, Andreas, 804, 805, 806, 807
DOT, 808
dot infix operator
    AVECTOR package, 809
Dot product, 810, 811, 812
dotgrad operator
    ORTHOVEC package, 813, 814
Double slash operator
    in rules, 815
Double tilde variables
    in rules, 816
down_qratio operator
    QSUM package, 817
downward_antidifference, 818
dp_pseudodivmod symbolic procedure
    CALI package, 819, 820
dp_pseudodivmod!* symbolic procedure
    CALI package, 821
dpgcd operator
    CALI package, 822
dpgcd symbolic procedure
    CALI package, 823
dpmat
    CALI package, 824, 825, 826, 827, 828
dpmat_coldegs symbolic procedure
    CALI package, 829
dpmat_cols symbolic procedure
    CALI package, 830
dpmat_gbtag symbolic procedure
    CALI package, 831
dpmat_list symbolic procedure
    CALI package, 832
dpmat_rows symbolic procedure
    CALI package, 833
draw Turtle function, 834
Dresse, Alain, 835
dsolve operator synonym
    ODESOLVE package, 836
dual bases
    CALI package, 837
dualbases
    CALI package, 838, 839, 840
dualhbases
    CALI package, 841, 842
dummy, 843, 844
Dummy indices
    Cantens package, 845
dummy indices, 846
DUMMY package, 847
DUMMY package, 848, 849
DUMMY package, 850, 851, 852, 853
dummy_base declaration
    DUMMY package, 854
dummy_indices operator
    CANTENS package, 855
dummy_name declaration
    DUMMY package, 856
dvint operator
    ORTHOVEC package, 857
dvolint operator
    ORTHOVEC package, 858