Pith Number

pith:75AM4VXQ

pith:2017:75AM4VXQRS4RAKRUWXP7M2UHL7

not attested not anchored not stored refs pending

The Peterson recurrence formula for the chromatic discriminant of a graph

G. Arunkumar

arxiv:1708.06382 v1 · 2017-08-21 · 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{75AM4VXQRS4RAKRUWXP7M2UHL7}

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	2026-05-18T00:37:41.737023Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff40ce56f08cb9102a34b5dff66a875fce9f8ec57505ec11b64cffc4b66648c4

Aliases

arxiv: 1708.06382 · arxiv_version: 1708.06382v1 · doi: 10.48550/arxiv.1708.06382 · pith_short_12: 75AM4VXQRS4R · pith_short_16: 75AM4VXQRS4RAKRU · pith_short_8: 75AM4VXQ

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/75AM4VXQRS4RAKRUWXP7M2UHL7 \
  | 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: ff40ce56f08cb9102a34b5dff66a875fce9f8ec57505ec11b64cffc4b66648c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33aa78abcbaee71f518ed7a1fe8d3a46c9297d41c608ce18a2dc254939b0bc57",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-08-21T19:00:16Z",
    "title_canon_sha256": "482aaf0ea3feafe4370ba029ed4ac82742beed44e3036c7ae24bc61a01e42078"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.06382",
    "kind": "arxiv",
    "version": 1
  }
}