Pith Number

pith:HMQFKBSX

pith:2014:HMQFKBSXVRWS3WVFC4XQ6R7IOS

not attested not anchored not stored refs pending

On the BDD/FC Conjecture

Jerzy Marcinkowski, Tomasz Gogacz

arxiv:1408.2081 v1 · 2014-08-09 · cs.DB

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HMQFKBSXVRWS3WVFC4XQ6R7IOS}

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	2026-05-18T01:25:16.162555Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b20550657ac6d2ddaa5172f0f47e8749424221a21361644693ad2b96e619135

Aliases

arxiv: 1408.2081 · arxiv_version: 1408.2081v1 · doi: 10.48550/arxiv.1408.2081 · pith_short_12: HMQFKBSXVRWS · pith_short_16: HMQFKBSXVRWS3WVF · pith_short_8: HMQFKBSX

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/HMQFKBSXVRWS3WVFC4XQ6R7IOS \
  | 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: 3b20550657ac6d2ddaa5172f0f47e8749424221a21361644693ad2b96e619135

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c74b2bd055db959293e4ac3e594b4053425161e5d39621e930d6e4a9e5426ceb",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "cs.DB",
    "submitted_at": "2014-08-09T11:09:00Z",
    "title_canon_sha256": "20fa1cdd7e58a578ca68af54643e4a6fd8c2934e4e51368a1a5d0b42f75e0de6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.2081",
    "kind": "arxiv",
    "version": 1
  }
}