Pith Number

pith:ZSEM74RZ

pith:2017:ZSEM74RZYX4UNFFIHDWEWMVURQ

not attested not anchored not stored refs pending

Regular Intersecting Families

Andrey Kupavskii, Ferdinand Ihringer

arxiv:1709.10462 v3 · 2017-09-29 · math.CO · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZSEM74RZYX4UNFFIHDWEWMVURQ}

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	2026-05-17T23:41:56.565529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc88cff239c5f94694a838ec4b32b48c06adccd97db5c34ca9c573ee1d6a270a

Aliases

arxiv: 1709.10462 · arxiv_version: 1709.10462v3 · doi: 10.48550/arxiv.1709.10462 · pith_short_12: ZSEM74RZYX4U · pith_short_16: ZSEM74RZYX4UNFFI · pith_short_8: ZSEM74RZ

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/ZSEM74RZYX4UNFFIHDWEWMVURQ \
  | 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: cc88cff239c5f94694a838ec4b32b48c06adccd97db5c34ca9c573ee1d6a270a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "43e1cb95ff0fe41f8b7de0671b5b4305b99be473133a51d7f459a4f1ef66db05",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-09-29T15:48:06Z",
    "title_canon_sha256": "c112fe0dbbd724f94a0cea047ef73b7e6b72615cb585c30adf4fca3847f1aaeb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.10462",
    "kind": "arxiv",
    "version": 3
  }
}