Pith Number

pith:DHXPU2SF

pith:2014:DHXPU2SFXHY2SC5LYW6XTHZBOF

not attested not anchored not stored refs pending

An extension of the direction problem

Marcella Tak\'ats, P\'eter Sziklai

arxiv:1407.5613 v1 · 2014-07-21 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DHXPU2SFXHY2SC5LYW6XTHZBOF}

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	2026-05-18T02:47:13.516532Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19eefa6a45b9f1a90babc5bd799f2171618baf9e81d244a2655b1af6028bc8a8

Aliases

arxiv: 1407.5613 · arxiv_version: 1407.5613v1 · doi: 10.48550/arxiv.1407.5613 · pith_short_12: DHXPU2SFXHY2 · pith_short_16: DHXPU2SFXHY2SC5L · pith_short_8: DHXPU2SF

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/DHXPU2SFXHY2SC5LYW6XTHZBOF \
  | 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: 19eefa6a45b9f1a90babc5bd799f2171618baf9e81d244a2655b1af6028bc8a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "263270351c8f55d9a24693466d7bb38425617e2cbe0fbd216be920b8e8dd7237",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-07-21T19:55:45Z",
    "title_canon_sha256": "8b7724315dcee9dd9d2eca4ecfcca5c2fbea9d2e6c6040b1b958a7645412c179"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.5613",
    "kind": "arxiv",
    "version": 1
  }
}