Pith Number

pith:47Z6A7Q4

pith:2016:47Z6A7Q4BU2YKF7SLRNV6UCD4D

not attested not anchored not stored refs pending

On plastikstufe, bordered Legendrian open book and overtwisted contact structures

Yang Huang

arxiv:1607.08262 v5 · 2016-07-27 · 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{47Z6A7Q4BU2YKF7SLRNV6UCD4D}

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	2026-05-18T00:41:26.078455Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e7f3e07e1c0d358517f25c5b5f5043e0d6b2b52ef1921b38c517c431fd447b00

Aliases

arxiv: 1607.08262 · arxiv_version: 1607.08262v5 · doi: 10.48550/arxiv.1607.08262 · pith_short_12: 47Z6A7Q4BU2Y · pith_short_16: 47Z6A7Q4BU2YKF7S · pith_short_8: 47Z6A7Q4

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/47Z6A7Q4BU2YKF7SLRNV6UCD4D \
  | 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: e7f3e07e1c0d358517f25c5b5f5043e0d6b2b52ef1921b38c517c431fd447b00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d78b027bf0ebfb3396ca672fc8bab68a58c8e61f5c9272aefb2e6e8550f8806",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2016-07-27T21:00:31Z",
    "title_canon_sha256": "ec54f1ab174892fd0ee5e675e063a44e61e479425ef9ee51a461382c47d429c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.08262",
    "kind": "arxiv",
    "version": 5
  }
}