Pith Number

pith:FC6EPSFS

pith:2018:FC6EPSFSB674CDWB3VLHS7LFLO

not attested not anchored not stored refs pending

A note on Dehn colorings and invariant factors

Derek A. Smith, Lorenzo Traldi, William Watkins

arxiv:1804.02700 v2 · 2018-04-08 · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FC6EPSFSB674CDWB3VLHS7LFLO}

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	2026-05-18T00:00:30.499520Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28bc47c8b20fbfc10ec1dd56797d655ba06044c565df91995e97e5272c8e7d13

Aliases

arxiv: 1804.02700 · arxiv_version: 1804.02700v2 · doi: 10.48550/arxiv.1804.02700 · pith_short_12: FC6EPSFSB674 · pith_short_16: FC6EPSFSB674CDWB · pith_short_8: FC6EPSFS

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/FC6EPSFSB674CDWB3VLHS7LFLO \
  | 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: 28bc47c8b20fbfc10ec1dd56797d655ba06044c565df91995e97e5272c8e7d13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "264d9305752303240733a17c4abfa73dc7c7961cd0126c01c694e4566f691d27",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2018-04-08T14:46:02Z",
    "title_canon_sha256": "5a8017103935bd0728b170eb5332d64fb00fb5c4c29b36e34ba043a9fe19c580"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.02700",
    "kind": "arxiv",
    "version": 2
  }
}