Pith Number

pith:F6FPYBWI

pith:2014:F6FPYBWIVOGMKW7HXTKX3ORJRB

not attested not anchored not stored refs pending

Automatic transversality in contact homology I: Regularity

Jo Nelson

arxiv:1407.3993 v2 · 2014-07-15 · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F6FPYBWIVOGMKW7HXTKX3ORJRB}

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	2026-05-18T01:49:31.480681Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f8afc06c8ab8cc55be7bcd57dba298861c440a2d6f3dc022ad5727b543b1a9b

Aliases

arxiv: 1407.3993 · arxiv_version: 1407.3993v2 · doi: 10.48550/arxiv.1407.3993 · pith_short_12: F6FPYBWIVOGM · pith_short_16: F6FPYBWIVOGMKW7H · pith_short_8: F6FPYBWI

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/F6FPYBWIVOGMKW7HXTKX3ORJRB \
  | 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: 2f8afc06c8ab8cc55be7bcd57dba298861c440a2d6f3dc022ad5727b543b1a9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b373c3ef515d182b6aa927acf186138f635731d2c45bcbe4f005a7b32517999c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2014-07-15T13:39:01Z",
    "title_canon_sha256": "db291797df8524188c6abc79903221c6d93ca07bf4f9ac7b3b2f7fe16b120369"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.3993",
    "kind": "arxiv",
    "version": 2
  }
}