Pith Number

pith:VXOXEUIA

pith:2019:VXOXEUIASZ6U6WMSE2UN4UINBU

not attested not anchored not stored refs pending

Coloring Hasse diagrams and disjointness graphs of curves

Istvan Tomon, Janos Pach

arxiv:1908.08250 v1 · 2019-08-22 · 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{VXOXEUIASZ6U6WMSE2UN4UINBU}

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	2026-07-04T23:59:11.121618Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

addd725100967d4f599226a8de510d0d379b85152a3b176febd2c0cf8e1d9305

Aliases

arxiv: 1908.08250 · arxiv_version: 1908.08250v1 · doi: 10.48550/arxiv.1908.08250 · pith_short_12: VXOXEUIASZ6U · pith_short_16: VXOXEUIASZ6U6WMS · pith_short_8: VXOXEUIA

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/VXOXEUIASZ6U6WMSE2UN4UINBU \
  | 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: addd725100967d4f599226a8de510d0d379b85152a3b176febd2c0cf8e1d9305

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49aff38f66cd861d188f80d1d28b440d13cb653f89a1a590cbbadc259a0caa82",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-08-22T08:22:36Z",
    "title_canon_sha256": "806bcf134ab976bb330ab158beaeef444131ac671eb3b2133edc74656254755b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.08250",
    "kind": "arxiv",
    "version": 1
  }
}