Pith Number

pith:DRUOCA4I

pith:2013:DRUOCA4IQ2TOFBYUF3OIJ7MJYH

not attested not anchored not stored refs pending

Higher dimensional contact topology via holomorphic disks

Klaus Niederkr\"uger

arxiv:1303.7415 v1 · 2013-03-29 · 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{DRUOCA4IQ2TOFBYUF3OIJ7MJYH}

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	2026-05-18T02:45:56.034752Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c68e1038886a6e287142edc84fd89c1fc03e29b22986ddf739fa07571cf6d09

Aliases

arxiv: 1303.7415 · arxiv_version: 1303.7415v1 · doi: 10.48550/arxiv.1303.7415 · pith_short_12: DRUOCA4IQ2TO · pith_short_16: DRUOCA4IQ2TOFBYU · pith_short_8: DRUOCA4I

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/DRUOCA4IQ2TOFBYUF3OIJ7MJYH \
  | 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: 1c68e1038886a6e287142edc84fd89c1fc03e29b22986ddf739fa07571cf6d09

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df0592bb5cacce525dc441c2a19dee8979c5e9d1c000b1d72811933339d1a633",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2013-03-29T15:00:02Z",
    "title_canon_sha256": "d9bad0f6ef7d56354b86349fe4c91018376a129d0779f29726176abe9a00f38f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.7415",
    "kind": "arxiv",
    "version": 1
  }
}