Pith Number

pith:VQU73UYY

pith:2013:VQU73UYY42TLWEFL5QEXOC2XM5

not attested not anchored not stored refs pending

Helix surfaces in the special linear group

A. Passos Passamani, I.I. Onnis, S. Montaldo

arxiv:1307.0215 v2 · 2013-06-30 · 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{VQU73UYY42TLWEFL5QEXOC2XM5}

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	2026-05-18T02:28:40.904603Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac29fdd318e6a6bb10abec09770b5767419774d894bb22777dfb9d0d0901d785

Aliases

arxiv: 1307.0215 · arxiv_version: 1307.0215v2 · doi: 10.48550/arxiv.1307.0215 · pith_short_12: VQU73UYY42TL · pith_short_16: VQU73UYY42TLWEFL · pith_short_8: VQU73UYY

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/VQU73UYY42TLWEFL5QEXOC2XM5 \
  | 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: ac29fdd318e6a6bb10abec09770b5767419774d894bb22777dfb9d0d0901d785

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "373bb169d7e9f422126fa41b764ab246cb3199695936ef53e205db47ad27b996",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-06-30T16:00:32Z",
    "title_canon_sha256": "58c3ce984b17f08f2d57e904a6513d0590b7ac0e1788cc458c6ee44dbc776e0a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.0215",
    "kind": "arxiv",
    "version": 2
  }
}