Pith Number

pith:IIPPTMIJ

pith:2025:IIPPTMIJAXINJOQETBKLCO75LL

not attested not anchored not stored refs pending

Orientations of graphs omitting non-edge-critical directed graphs

Hannah Sheats

arxiv:2502.21287 v2 · 2025-02-28 · 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{IIPPTMIJAXINJOQETBKLCO75LL}

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	2026-07-05T10:43:44.467430Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

421ef9b10905d0d4ba049854b13bfd5ae26046023e85ca4af921bdc9fc4fb600

Aliases

arxiv: 2502.21287 · arxiv_version: 2502.21287v2 · doi: 10.48550/arxiv.2502.21287 · pith_short_12: IIPPTMIJAXIN · pith_short_16: IIPPTMIJAXINJOQE · pith_short_8: IIPPTMIJ

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/IIPPTMIJAXINJOQETBKLCO75LL \
  | 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: 421ef9b10905d0d4ba049854b13bfd5ae26046023e85ca4af921bdc9fc4fb600

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e5403f6167ade265e7f2b63707a19db934aa355d5183be5d084c93735a3f1fa",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2025-02-28T18:10:13Z",
    "title_canon_sha256": "fb6d5b0a609ffbe1838f8abe6f53cfe0ea41c8de4318c8083c6c0fb1eb1a0d9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.21287",
    "kind": "arxiv",
    "version": 2
  }
}