Pith Number

pith:DYHKB7AW

pith:2020:DYHKB7AWU74GXOI2BFHSRIWTAB

not attested not anchored not stored refs pending

A note on watchman's walks in de Bruijn graphs

Brittany Pittman, Danny Dyer, Jared Howell

arxiv:2007.12825 v1 · 2020-07-25 · 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{DYHKB7AWU74GXOI2BFHSRIWTAB}

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	2026-07-05T01:22:04.273479Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e0ea0fc16a7f86bb91a094f28a2d30060bc92bc95ad21ce1590cf08e702a679

Aliases

arxiv: 2007.12825 · arxiv_version: 2007.12825v1 · doi: 10.48550/arxiv.2007.12825 · pith_short_12: DYHKB7AWU74G · pith_short_16: DYHKB7AWU74GXOI2 · pith_short_8: DYHKB7AW

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/DYHKB7AWU74GXOI2BFHSRIWTAB \
  | 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: 1e0ea0fc16a7f86bb91a094f28a2d30060bc92bc95ad21ce1590cf08e702a679

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "281b7ec7e226ce806521a1a722da76845910941e0da2c8887de2094b07a74224",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2020-07-25T01:47:53Z",
    "title_canon_sha256": "e121eb3fd0ed96156ed41c2d66f4bb5494d6acda6e4f2b0a666e38dc6a0a9699"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.12825",
    "kind": "arxiv",
    "version": 1
  }
}