Overall FOF Statistics
----------------------
Domains                     31
Abstract problems         4420
Problems                  7137
Problems with equality    5486 (76%)
Pure equality problems     367 ( 5%)
Theorem/Unsatisfiable     6204 (86%)
CounterSat/Satisfiable     799 (11%)

Problem-by-problem                 Min      Max      Avg      Med
------------------                 ------------------------------
Number of formulae                   1  3341990    33878       50
% of unit formulae                  0%     100%      29%      20%
Number of atoms                      1  5328217    65900      220
% of equality atoms                 0%     100%      19%      11%
  in problems with equality         0%     100%      24%      17%
Avg atoms per formula              1.0  12812.0     55.7      3.3
Number of predicate symbols          0   204678     2411       13
% of propositions                   0%     100%     nan%       0%
Maximal predicate arity              0       81        3        2
Number of functors                   0  1050014    11112       10
% of constants                      0%     100%      39%      26%
Maximal functor arity                0      220        3        2
Number of variables                  0   972236    16309      114
          !                          0   972235     6826       89
          ?                          0     9512      383        6
Number of connectives                0  2065419    34942      172
Maximal formula depth                1     4213       42       15
Average formula depth                1     4209       15        5
Maximal term depth                   0       40        4        4
Average term depth                   0        4        1        1

The TPTP Domain Structure
-------------------------
The domain structure of the TPTP is depicted below,  with counts of the numbers
of FOF  problems and versions in each domain.  The prefixes name subdirectories 
in the Problems directory, and prefix the problem names in that directory.

                                                     Domain  # Problems
     Field             Subfield                      Prefix  Abst / Vers
 -----------------------------------------------------------------------

 |-- Logic --------|-- Combinatory Logic                COL     0 /    0
 |                 |-- Logic Calculi                    LCL   189 /  406
 |                 |-- Henkin Models                    HEN     0 /    0
 |
 |-- Mathematics --|-- Set Theory                       SET   447 /  468
 |                 |-- Set Theory Continued             SEU   433 /  906
 |                 |-- Set Theory Continued             SEV     0 /    0
 |                 |-- Graph Theory                     GRA    25 /   32
 |                 |-- Algebra --|-- Relation Algebra   REL    52 /  110
 |                 |             |-- Boolean Algebra    BOO     1 /    1
 |                 |             |-- Robbins Algebra    ROB     0 /    0
 |                 |             |-- Left Distributive  LDA     0 /    0
 |                 |             |-- Lattices           LAT   108 /  413
 |                 |             |-- Quantales          QUA     0 /    0
 |                 |             |-- Kleene Algebra     KLE   168 /  225
 |                 |             |-- Groups             GRP    86 /  202
 |                 |             |-- Rings              RNG    84 /  157
 |                 |             |-- Fields             FLD     0 /    0
 |                 |             |-- Homological Alg    HAL     6 /    9
 |                 |             |-- General Algebra    ALG   221 /  285
 |                 |-- Number Theory                    NUM   357 /  609
 |                 |-- Topology                         TOP    29 /  107
 |                 |-- Analysis                         ANA     0 /    0
 |                 |-- Geometry                         GEO   265 /  418
 |                 |-- Category Theory                  CAT    17 /   68
 |
 |-- Computer -----|-- Computing Theory                 COM    15 /   31
 |   Science       |-- Knowledge Representation         KRS   254 /  254
 |                 |-- Natural Language Processing      NLP   262 /  262
 |                 |-- Planning                         PLA     6 /    6
 |                 |-- Agents                           AGT    26 /   52
 |                 |-- Commonsense Reasoning            CSR   119 /  764
 |                 |-- Software Creation                SWC   423 /  423
 |                 |-- Software Verification            SWV   328 /  346
 |
 |-- Science and --|-- Hardware Creation                HWC     0 /    0
 |   Engineering   |-- Hardware Verification            HWV     0 /    0
 |                 |-- Medicine                         MED    11 /   11
 |                 |-- Processes                        PRO    18 /   72
 |
 |-- Social -------|-- Social Choice Theory             SCT     0 /    0
 |   Sciences      |-- Management                       MGT    66 /   78
 |                 |-- Geography                        GEG     1 /    1
 |
 |-- Other --------|-- Syntactic                        SYN   365 /  375
                   |-- Syntactic Continued              SYO     0 /    0
                   |-- Puzzles                          PUZ    28 /   36
                   |-- Miscellaneous                    MSC    10 /   10
