Pith Number

pith:6SYKAIYQ

pith:2017:6SYKAIYQBDIVRCC7Y4LUJLFW4X

not attested not anchored not stored refs pending

Non-crossing partitions and Milnor fibers

Colum Watt, Michael Falk, Thomas Brady

arxiv:1709.07811 v1 · 2017-09-22 · math.GR · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6SYKAIYQBDIVRCC7Y4LUJLFW4X}

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	2026-05-17T23:58:05.405610Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f4b0a0231008d158885fc71744acb6e5c128fce438ebbad2dcb055adc928c530

Aliases

arxiv: 1709.07811 · arxiv_version: 1709.07811v1 · doi: 10.48550/arxiv.1709.07811 · pith_short_12: 6SYKAIYQBDIV · pith_short_16: 6SYKAIYQBDIVRCC7 · pith_short_8: 6SYKAIYQ

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/6SYKAIYQBDIVRCC7Y4LUJLFW4X \
  | 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: f4b0a0231008d158885fc71744acb6e5c128fce438ebbad2dcb055adc928c530

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8b4e989f1eec95e6cfd33b74ae6e960b76c9182df84cbd8389697aae2400589",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2017-09-22T15:36:36Z",
    "title_canon_sha256": "5d6e7daacad9ba7ecf897f0f2042ca8ced63e2f35e519e46bea5618dcd9101ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.07811",
    "kind": "arxiv",
    "version": 1
  }
}