D

d (exterior differentiation) operator
    EXCALC package, 629
dd_groebner operator
    GROEBNER package, 630
Declaration, 631
    antisymmetric, 632
    array, 633
    complex_conjugates, 634
    even, 635
    factor, 636
    index, 637
    korder, 638
    linear, 639
    matrix, 640
    noncom, 641
    nonzero, 642
    notrealvalued, 643
    odd, 644
    off, 645
    on, 646
    operator, 647
    order, 648, 649
    precedence, 650
    print_indexed, 651
    print_noindexed, 652
    realvalued, 653
    remfac, 654
    selfconjugate, 655
    symmetric, 656
    mode handling, 657
decompose operator, 658
Decomposition
    partial fraction, 659
Default term order
    GROEBNER package, 660
defid statement
    RLfi package, 661
defindex statement
    RLfi package, 662
define command, 663
define_spaces command
    CANTENS package, 664, 665
Definite integration, 666
Definite integration (simple), 667
defint function
    AVECTOR package, 668
DEFINT package, 669
deflineint function
    AVECTOR package, 670
defn switch, 671, 672, 673
defpoly statement
    ARNUM package, 674
deg operator, 675
deg2dms numerical operator, 676
deg2rad numerical operator, 677
Degree, 678
degree arguments, 679
degree operator
    CALI package, 680
degree vectors
    CALI package, 681
degree!* symbolic procedure
    CALI package, 682
degreeorder procedure
    CALI package, 683
degreeorder!* symbolic procedure
    CALI package, 684
degsfromresolution operator
    CALI package, 685
del keyword
    CANTENS package, 686
del tensor
    CANTENS package, 687, 688
delete operator
    ASSIST package, 689
delete_all operator
    ASSIST package, 690
deleteunits operator
    CALI package, 691
deleteunits!* symbolic procedure
    CALI package, 692
dellastdigit operator
    ASSIST package, 693
delpair operator
    ASSIST package, 694
delsq operator
    AVECTOR package, 695
    ORTHOVEC package, 696
delta function
    CANTENS package, 697, 698
delta keyword
    CANTENS package, 699
delta operator
    CANTENS package, 700
delta tensor
    CANTENS package, 701, 702, 703, 704, 705
demo switch, 706
den operator, 707, 708
dep_var global variable
    CDE package, 709
depatom operator
    ASSIST package, 710
depend command, 711, 712, 713
    CANTENS package, 714, 715
depth operator
    ASSIST package, 716
depvarp operator
    ASSIST package, 717
deq(i) operator
    SPDE package, 718
der_deg_ordering operator
    CDE package, 719
Derivative
    of generic functions, 720, 721
    partial, 722
    variational, 723
derived_system operator
    EDS package, 724
DESIR package, 725
det operator, 726, 727
detectunits switch, 728, 729
Determinant
    in detm!*, 730
detidnum operator
    ASSIST package, 731
detm!* variable
    EXCALC package, 732
DETRAFO, 733
df operator, 734, 735
    CANTENS package, 736
df_odd operator
    CDE package, 737
dfint switch, 738
dfp operator
    DFPART package, 739
dfp_commute declaration
    DFPART package, 740
DFPART package, 741
dfprint switch, 742
diagonal operator
    LINALG package, 743
diagonalize operator
    SYMMETRY package, 744
Dicrescenzo, C., 745
diff operator
    LPDO package, 746
Differential geometry, 747
Differentiation, 748, 749, 750
    partial, 751
    vector, 752, 753
diffset operator
    ASSIST package, 754
Digamma function, 755, 756
dilog, 757, 758, 759
Dilog function, 760, 761, 762
dim operator
    CALI package, 763, 764
    EDS package, 765
dim!* symbolic procedure
    CALI package, 766
dim_grassmann_variety operator
    EDS package, 767
Dimension, 768
dimzerop operator
    CALI package, 769
dimzerop!* symbolic procedure
    CALI package, 770
Dirac \(\gamma \) matrix, 771
directsum operator
    CALI package, 772
disjoin operator
    EDS package, 773
dispjacobian switch, 774
Display, 775
display operator, 776
Display, graphical, 777
displayflag operator
    ASSIST package, 778
displayframe command
    EXCALC package, 779, 780
Displaying structure, 781
displayprop operator
    ASSIST package, 782
distribute switch, 783, 784
div operator
    AVECTOR package, 785
    ORTHOVEC package, 786
div switch, 787, 788
Divergence
    vector field, 789
divide operator, 790
divpol operator
    ASSIST package, 791
dlineint operator
    ORTHOVEC package, 792
dmode
    CALI package, 793
dms2deg numerical operator, 794
dms2rad numerical operator, 795
do keyword, 796, 797, 798, 799
Dollar sign, 800
Dolzmann, Andreas, 801, 802, 803, 804
DOT, 805
dot infix operator
    AVECTOR package, 806
Dot product, 807, 808, 809
dotgrad operator
    ORTHOVEC package, 810, 811
Double slash operator
    in rules, 812
Double tilde variables
    in rules, 813
down_qratio operator
    QSUM package, 814
downward_antidifference, 815
dp_pseudodivmod symbolic procedure
    CALI package, 816, 817
dp_pseudodivmod!* symbolic procedure
    CALI package, 818
dpgcd operator
    CALI package, 819
dpgcd symbolic procedure
    CALI package, 820
dpmat
    CALI package, 821, 822, 823, 824, 825
dpmat_coldegs symbolic procedure
    CALI package, 826
dpmat_cols symbolic procedure
    CALI package, 827
dpmat_gbtag symbolic procedure
    CALI package, 828
dpmat_list symbolic procedure
    CALI package, 829
dpmat_rows symbolic procedure
    CALI package, 830
draw Turtle function, 831
Dresse, Alain, 832
dsolve operator synonym
    ODESOLVE package, 833
dual bases
    CALI package, 834
dualbases
    CALI package, 835, 836, 837
dualhbases
    CALI package, 838, 839
dummy, 840, 841
Dummy indices
    Cantens package, 842
dummy indices, 843
DUMMY package, 844
DUMMY package, 845, 846
DUMMY package, 847, 848, 849, 850
dummy_base declaration
    DUMMY package, 851
dummy_indices operator
    CANTENS package, 852
dummy_name declaration
    DUMMY package, 853
dvint operator
    ORTHOVEC package, 854
dvolint operator
    ORTHOVEC package, 855