Pith Number

pith:AIYWLQSZ

pith:2015:AIYWLQSZCXQYDO7I5BMMJMDOQ3

not attested not anchored not stored refs pending

Why cigar can not be isometrically immersed into the 3-space

Anqiang Zhu, Li Ma

arxiv:1506.00764 v1 · 2015-06-02 · math.DG · math.AP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AIYWLQSZCXQYDO7I5BMMJMDOQ3}

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	2026-05-18T01:59:51.266752Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

023165c25915e181bbe8e858c4b06e86cd323a2ac28e562a9d982f600cd1f05f

Aliases

arxiv: 1506.00764 · arxiv_version: 1506.00764v1 · doi: 10.48550/arxiv.1506.00764 · pith_short_12: AIYWLQSZCXQY · pith_short_16: AIYWLQSZCXQYDO7I · pith_short_8: AIYWLQSZ

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/AIYWLQSZCXQYDO7I5BMMJMDOQ3 \
  | 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: 023165c25915e181bbe8e858c4b06e86cd323a2ac28e562a9d982f600cd1f05f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ffe121755f71a92e74b4912dc49fc671c51eb999fcb191de6aaec3e5792e8b8",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2015-06-02T06:26:17Z",
    "title_canon_sha256": "63792bf57c29f8f86882b54156e6d031e75385b79198c0d4909f390e1b68cb03"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.00764",
    "kind": "arxiv",
    "version": 1
  }
}