Pith Number

pith:3PH7HMUP

pith:2013:3PH7HMUPKDMP2SELDGQUP5YIZR

not attested not anchored not stored refs pending

A classification result for helix surfaces with parallel mean curvature in product spaces

Dorel Fetcu

arxiv:1312.3196 v1 · 2013-12-11 · 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{3PH7HMUPKDMP2SELDGQUP5YIZR}

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	2026-05-18T01:45:51.644426Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dbcff3b28f50d8fd488b19a147f708cc59b7cfc44573e1716368f29c7af0bc2c

Aliases

arxiv: 1312.3196 · arxiv_version: 1312.3196v1 · doi: 10.48550/arxiv.1312.3196 · pith_short_12: 3PH7HMUPKDMP · pith_short_16: 3PH7HMUPKDMP2SEL · pith_short_8: 3PH7HMUP

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/3PH7HMUPKDMP2SELDGQUP5YIZR \
  | 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: dbcff3b28f50d8fd488b19a147f708cc59b7cfc44573e1716368f29c7af0bc2c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2a81c3e36504d8c988d9c5df4da508da9d91c56368c335f530c55a2c4b335d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-12-11T14:58:25Z",
    "title_canon_sha256": "e5115d1a0c0f6aeb4df6fdd410f2d23e95e8d36e7b843597023f4d80a767b6f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.3196",
    "kind": "arxiv",
    "version": 1
  }
}