Pith Number

pith:BSO2MEMH

pith:2011:BSO2MEMHUFQIXNY22LVXUIIN3P

not attested not anchored not stored refs pending

Calabi-Yau Problem for Legendrian curves in C^3 and applications

Francisco Martin, Kotaro Yamada, Masaaki Umehara

arxiv:1107.0106 v2 · 2011-07-01 · 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{BSO2MEMHUFQIXNY22LVXUIIN3P}

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	2026-05-18T03:55:02.875173Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c9da61187a1608bb71ad2eb7a210ddbfc0ef7e60d68d972b2615a99273e2f15

Aliases

arxiv: 1107.0106 · arxiv_version: 1107.0106v2 · doi: 10.48550/arxiv.1107.0106 · pith_short_12: BSO2MEMHUFQI · pith_short_16: BSO2MEMHUFQIXNY2 · pith_short_8: BSO2MEMH

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/BSO2MEMHUFQIXNY22LVXUIIN3P \
  | 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: 0c9da61187a1608bb71ad2eb7a210ddbfc0ef7e60d68d972b2615a99273e2f15

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb411aa556c118c7a9c564d70d0f717190f7ddbd58408214e87b58a9a97989a3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2011-07-01T05:28:42Z",
    "title_canon_sha256": "55185ee8c50d88dcc4284d180aef9edf3153428e4db18a8693ba7c54a668c5f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.0106",
    "kind": "arxiv",
    "version": 2
  }
}