Pith Number

pith:DCCLDGCR

pith:2015:DCCLDGCRJI36GC6HH4MTLNLWIF

not attested not anchored not stored refs pending

Note on Perfect Forests in Digraphs

Anders Yeo, Gregory Gutin

arxiv:1511.01661 v1 · 2015-11-05 · cs.DM · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DCCLDGCRJI36GC6HH4MTLNLWIF}

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	2026-05-18T01:27:44.891957Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1884b198514a37e30bc73f1935b576417fefb2982da8dc3aafad23fade858478

Aliases

arxiv: 1511.01661 · arxiv_version: 1511.01661v1 · doi: 10.48550/arxiv.1511.01661 · pith_short_12: DCCLDGCRJI36 · pith_short_16: DCCLDGCRJI36GC6H · pith_short_8: DCCLDGCR

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/DCCLDGCRJI36GC6HH4MTLNLWIF \
  | 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: 1884b198514a37e30bc73f1935b576417fefb2982da8dc3aafad23fade858478

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85b8c6d9777b336ac5b857dc8d9a7faa8ce404cd121df73ca523513d25e975a1",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2015-11-05T09:11:14Z",
    "title_canon_sha256": "d9ce7189646dbdaca20dfeef1011b614ef1559fc7400a901494ad44bfd0e2ffb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.01661",
    "kind": "arxiv",
    "version": 1
  }
}