Pith Number

pith:FRTPIN4J

pith:2015:FRTPIN4J6FECUSPBN6P6DNCK2V

not attested not anchored not stored refs pending

Pfaff Systems, currents and hulls

Nessim Sibony

arxiv:1509.01790 v4 · 2015-09-06 · math.CV · math.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{FRTPIN4J6FECUSPBN6P6DNCK2V}

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	2026-05-18T01:12:17.165792Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c66f43789f1482a49e16f9fe1b44ad552e714b9624f6efbcf7ba715b840c984

Aliases

arxiv: 1509.01790 · arxiv_version: 1509.01790v4 · doi: 10.48550/arxiv.1509.01790 · pith_short_12: FRTPIN4J6FEC · pith_short_16: FRTPIN4J6FECUSPB · pith_short_8: FRTPIN4J

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/FRTPIN4J6FECUSPBN6P6DNCK2V \
  | 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: 2c66f43789f1482a49e16f9fe1b44ad552e714b9624f6efbcf7ba715b840c984

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af08c6e432f2e1d7b10596aab19c30406d36e101e1f2a63a67923ad739a054e3",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2015-09-06T09:40:30Z",
    "title_canon_sha256": "8706e2e00f5ff8168b735ad1d4692b258fcbeae05e065bd2f6d3386d08fa224a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.01790",
    "kind": "arxiv",
    "version": 4
  }
}