Pith Number

pith:2BNF7L6H

pith:2020:2BNF7L6HZFGT2PC4TXKQU6MTSD

not attested not anchored not stored refs pending

Digraphs Homomorphism Problems with Maltsev Condition

Arash Rafiey, Ashwin Murali, Jeff Kinne

arxiv:2008.09921 v2 · 2020-08-22 · cs.DS · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2BNF7L6HZFGT2PC4TXKQU6MTSD}

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	2026-07-05T01:51:08.812793Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d05a5fafc7c94d3d3c5c9dd50a799390c13381184581a733635e498b62d5dc65

Aliases

arxiv: 2008.09921 · arxiv_version: 2008.09921v2 · doi: 10.48550/arxiv.2008.09921 · pith_short_12: 2BNF7L6HZFGT · pith_short_16: 2BNF7L6HZFGT2PC4 · pith_short_8: 2BNF7L6H

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/2BNF7L6HZFGT2PC4TXKQU6MTSD \
  | 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: d05a5fafc7c94d3d3c5c9dd50a799390c13381184581a733635e498b62d5dc65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d62b21f07f3aeabcc6478d3f6ca20a893d2c29a80d866ebcf5b7d4efcb1f9f0",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2020-08-22T22:17:18Z",
    "title_canon_sha256": "01a19b2e045b7c79ea8f03246435b6031a115ca66e41b07b7b1b0892770b0c25"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.09921",
    "kind": "arxiv",
    "version": 2
  }
}