Pith Number

pith:ZSORQZPX

pith:2014:ZSORQZPXKQ6MJTVYMAJL7JTX4M

not attested not anchored not stored refs pending

Overtwisted Disks and Exotic Symplectic Structures

Roger Casals

arxiv:1402.7099 v1 · 2014-02-27 · 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{ZSORQZPXKQ6MJTVYMAJL7JTX4M}

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	2026-05-18T02:57:35.071303Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc9d1865f7543cc4ceb86012bfa677e339d599366f2c6271a5a4c4717a1792b7

Aliases

arxiv: 1402.7099 · arxiv_version: 1402.7099v1 · doi: 10.48550/arxiv.1402.7099 · pith_short_12: ZSORQZPXKQ6M · pith_short_16: ZSORQZPXKQ6MJTVY · pith_short_8: ZSORQZPX

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/ZSORQZPXKQ6MJTVYMAJL7JTX4M \
  | 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: cc9d1865f7543cc4ceb86012bfa677e339d599366f2c6271a5a4c4717a1792b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20a677278f79f302919e695aba0520c1a0af0de160879ace1240d78ef7ff3081",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2014-02-27T22:32:48Z",
    "title_canon_sha256": "0710b4dd06172956cec3a8dae8dc729f8a3c125234ea224f31e773ad7ce3238a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.7099",
    "kind": "arxiv",
    "version": 1
  }
}