Pith Number

pith:EDSYINQH

pith:2011:EDSYINQH3TVZ3GQPXK322X6SQ5

not attested not anchored not stored refs pending

On a Problem of Erd\H{o}s, Herzog and Sch\"onheim

Cui-Ying Hu, Yong-Gao Chen

arxiv:1102.5574 v2 · 2011-02-28 · math.CO · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EDSYINQH3TVZ3GQPXK322X6SQ5}

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	2026-05-18T03:55:21.735208Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20e5843607dceb9d9a0fbab7ad5fd28742e1ae654c6b16be71396d5f3a1ae03f

Aliases

arxiv: 1102.5574 · arxiv_version: 1102.5574v2 · doi: 10.48550/arxiv.1102.5574 · pith_short_12: EDSYINQH3TVZ · pith_short_16: EDSYINQH3TVZ3GQP · pith_short_8: EDSYINQH

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/EDSYINQH3TVZ3GQPXK322X6SQ5 \
  | 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: 20e5843607dceb9d9a0fbab7ad5fd28742e1ae654c6b16be71396d5f3a1ae03f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "858b17fdb302cb88e72ee26c5d1a8cb91458749e2031a451fc97631094c59dd2",
    "cross_cats_sorted": [
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-02-28T02:33:35Z",
    "title_canon_sha256": "47e63ae6a6a9e06f9834c585b0bbbc2e5c62fccfe8be91768627829800449995"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.5574",
    "kind": "arxiv",
    "version": 2
  }
}