Pith Number

pith:VLUNX63J

pith:2018:VLUNX63J35JSTX2CTGQ3RYSEEA

not attested not anchored not stored refs pending

Complex contact manifolds, varieties of minimal rational tangents, and exterior differential systems

Giovanni Moreno, Jaros{\l}aw Buczy\'nski

arxiv:1805.08548 v2 · 2018-05-22 · math.AG · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VLUNX63J35JSTX2CTGQ3RYSEEA}

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	2026-05-17T23:52:53.063867Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aae8dbfb69df5329df4299a1b8e24420333a1caf25830e11e01a65d98c457a99

Aliases

arxiv: 1805.08548 · arxiv_version: 1805.08548v2 · doi: 10.48550/arxiv.1805.08548 · pith_short_12: VLUNX63J35JS · pith_short_16: VLUNX63J35JSTX2C · pith_short_8: VLUNX63J

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/VLUNX63J35JSTX2CTGQ3RYSEEA \
  | 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: aae8dbfb69df5329df4299a1b8e24420333a1caf25830e11e01a65d98c457a99

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d832e0dbcfa0a10689cfa179c6d0d9a372224fe4317c62513645fdcd0139a2c",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-05-22T12:43:04Z",
    "title_canon_sha256": "c0c8675ee8ac1c505ddf2aa8392b0925a88b1d658fdf55ebd06f0ae16d0aae07"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.08548",
    "kind": "arxiv",
    "version": 2
  }
}