Overall TPTP Statistics
-----------------------
Number of domains                     25
Number of abstract problems         1897
Number of problems                  2652       : 113 Pr ( 4%)  + 2539 NP (96%)
Number of non-Horn problems         1460 (55%) :  58 Pr (51%') : 1402 NP (55%")
Number of problems with equality    1837 (69%) :               : 1837 NP (72%")
Number of pure equality problems     357 (13%) :               :  357 NP (14%")
Total number of clauses           397018       : (' = % of Pr) : (" = % of NP)
Total number of literals         1186001


Problem-by-problem              Non-propositional            Propositional
------------------           Min    Max    Av   Med     Min    Max    Av   Med
                             ----------------------     ----------------------
Number of clauses              2   6404   136    84       2   8192   436    36
% of non-Horn clauses         0%    99%    5%    4%      0%    99%   21%    1%
  in non-Horn problems        0%    99%    9%    5%      1%    99%   40%   45%
% of unit clauses             0%   100%   32%   21%      0%   100%   16%    1%
Number of literals             2  18966   322   206       2 106496  3246   132
% of equality literals        0%   100%   41%   45%
  in equality problems        4%   100%   57%   47%
Av literals per clause       1.0    8.0   2.1   2.1     1.0   13.0   3.4   2.7 
Number of predicate symbols    1   4042    14     5       1    840    68    13
Number of function symbols     0     94    24    10
% of constants                0%   100%   50%   50%
Number of variables            0  32000   318   293
% of singletons               0%   100%    8%    7%
Maximal clause size            1     25     4     5       1     21     4     3
Maximal term depth             0     51     4     5
The TPTP Domain Structure
-------------------------
The domain structure of the TPTP is depicted below,  with counts of the numbers
of problems  and versions in each domain.  The prefixes name  subdirectories in 
the Problems directory, and prefix the problem names in that directory.

     Field                  Subfields                    Prefix   Probs / Vers
 -----------------------------------------------------------------------------

 |-- logic -------------|-- combinatory logic               COL      66 /  105
 |                      |-- logic calculi                   LCL     256 /  278
 |                      |-- henkin models                   HEN      12 /   64
 |
 |-- mathematics -------|-- set theory                      SET     567 /  700
 |                      |
 |                      |-- graph theory                    GRA       1 /    1
 |                      |
 |                      |-- algebra --|-- boolean algebra   BOO      18 /   51
 |                      |             |-- robbins           ROB      25 /   34
 |                      |             |-- left dist've      LDA      14 /   23
 |                      |             |-- lattices          LAT       5 /   10
 |                      |             |-- groups            GRP     113 /  148
 |                      |             |-- rings             RNG      40 /  100
 |                      |             |-- general algebra   ALG       2 /    4
 |                      |
 |                      |-- number theory                   NUM     285 /  322
 |                      |
 |                      |-- topology                        TOP      19 /   24
 |                      |
 |                      |-- analysis                        ANA       5 /   19
 |                      |
 |                      |-- geometry                        GEO      78 /  165
 |                      |
 |                      |-- category theory                 CAT      19 /   59
 |
 |-- computer science --|-- computing theory                COM       4 /    6
 |                      |-- planning                        PLA      23 /   30
 |                      |-- program verification            PRV       9 /    9
 |
 |-- engineering -------|-- circuit design                  CID       3 /    4
 |                      |-- circuit verification            CIV       4 /    4
 |
 |-- other -------------|-- syntactic                       SYN     287 /  402
                        |-- puzzles                         PUZ      34 /   48
                        |-- miscellaneous                   MSC       8 /   42

