Pith Number

pith:SQEMNE4S

pith:2017:SQEMNE4S5U5RJYQFJOJ4RSXDZF

not attested not anchored not stored refs pending

Forbidden vector-valued intersections

Eoin Long, Peter Keevash

arxiv:1706.03740 v1 · 2017-06-12 · 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{SQEMNE4S5U5RJYQFJOJ4RSXDZF}

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	2026-05-18T00:42:33.870159Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9408c69392ed3b14e2054b93c8cae3c95c0906cbff59f251e09d19795987d082

Aliases

arxiv: 1706.03740 · arxiv_version: 1706.03740v1 · doi: 10.48550/arxiv.1706.03740 · pith_short_12: SQEMNE4S5U5R · pith_short_16: SQEMNE4S5U5RJYQF · pith_short_8: SQEMNE4S

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/SQEMNE4S5U5RJYQFJOJ4RSXDZF \
  | 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: 9408c69392ed3b14e2054b93c8cae3c95c0906cbff59f251e09d19795987d082

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8513b0f390ee31853c0fa25f6050470655fb0a829a0603ad0c6c0ac20488350",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-06-12T17:22:37Z",
    "title_canon_sha256": "31cacbb0e61dfed967799dafb8b38e37fa35d4dcb11bd3839fa9b971dfa2c972"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.03740",
    "kind": "arxiv",
    "version": 1
  }
}