Pith Number

pith:BRUJY6CC

pith:2017:BRUJY6CCQJ77GZWC3H67P5R22R

not attested not anchored not stored refs pending

Path-contractions, edge deletions and connectivity preservation

Felix Reidl, Gregory Gutin, Magnus Wahlstr\"om, M. S. Ramanujan

arxiv:1704.06622 v1 · 2017-04-21 · 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{BRUJY6CCQJ77GZWC3H67P5R22R}

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	2026-05-18T00:45:59.223106Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c689c7842827ff366c2d9fdf7f63ad45d4e3d954568e81e8561734005d9ed66

Aliases

arxiv: 1704.06622 · arxiv_version: 1704.06622v1 · doi: 10.48550/arxiv.1704.06622 · pith_short_12: BRUJY6CCQJ77 · pith_short_16: BRUJY6CCQJ77GZWC · pith_short_8: BRUJY6CC

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/BRUJY6CCQJ77GZWC3H67P5R22R \
  | 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: 0c689c7842827ff366c2d9fdf7f63ad45d4e3d954568e81e8561734005d9ed66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a825de144855a27656d851db7973ba5e4c396598f3145843b615782334b1c71e",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-04-21T16:34:42Z",
    "title_canon_sha256": "661457ed2e195a3b568a5ca26498cb597d9751671cdd0588d616c12ba305175c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.06622",
    "kind": "arxiv",
    "version": 1
  }
}