Pith Number

pith:6AMI36CW

pith:2017:6AMI36CWJW3JXA6QCKQRH7LL33

not attested not anchored not stored refs pending

The isoperimetric problem for Lens spaces

Celso Viana

arxiv:1702.05816 v1 · 2017-02-19 · 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{6AMI36CWJW3JXA6QCKQRH7LL33}

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	2026-05-18T00:50:25.264703Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0188df8564db69b83d012a113fd6bdee59ce84ae66376b5570e8e2d6ac206a6

Aliases

arxiv: 1702.05816 · arxiv_version: 1702.05816v1 · doi: 10.48550/arxiv.1702.05816 · pith_short_12: 6AMI36CWJW3J · pith_short_16: 6AMI36CWJW3JXA6Q · pith_short_8: 6AMI36CW

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/6AMI36CWJW3JXA6QCKQRH7LL33 \
  | 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: f0188df8564db69b83d012a113fd6bdee59ce84ae66376b5570e8e2d6ac206a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c706a13b99640df1a07c4cf4fb3534d132b2429c70f11e7b240c1c6650af43c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-02-19T23:00:38Z",
    "title_canon_sha256": "ba47e0683e790a34de263b80b23a9000dd0bf413dddc8e08936e16c79d8eeb0a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.05816",
    "kind": "arxiv",
    "version": 1
  }
}