Pith Number

pith:D2FJWCDR

pith:2008:D2FJWCDRQ4XZEKA5C7YYBXTLHX

not attested not anchored not stored refs pending

Canonical calculi with (n,k)-ary quantifiers

Anna Zamansky, Arnon Avron

arxiv:0806.0081 v4 · 2008-05-31 · cs.LO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D2FJWCDRQ4XZEKA5C7YYBXTLHX}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:37:42.440252Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e8a9b0871872f92281d17f180de6b3dfcf73c804f29cbe6681b259e37ee902d

Aliases

arxiv: 0806.0081 · arxiv_version: 0806.0081v4 · doi: 10.48550/arxiv.0806.0081 · pith_short_12: D2FJWCDRQ4XZ · pith_short_16: D2FJWCDRQ4XZEKA5 · pith_short_8: D2FJWCDR

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/D2FJWCDRQ4XZEKA5C7YYBXTLHX \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 1e8a9b0871872f92281d17f180de6b3dfcf73c804f29cbe6681b259e37ee902d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0d0608f97f4840bd65958c5526b44d9cb39165f29172b7514ec90b1c7250687",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2008-05-31T15:35:40Z",
    "title_canon_sha256": "39f9efb14fbdc56c1f7871e05f6cb6587527c2325ee77b98c51827f82466eacf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0806.0081",
    "kind": "arxiv",
    "version": 4
  }
}