Pith Number

pith:OLUYU5QA

pith:2010:OLUYU5QARLGNLWXQTMRSYH4FH6

not attested not anchored not stored refs pending

On a differential test of homeomorphism, found by N.V. Efimov

Victor Alexandrov

arxiv:1010.3637 v1 · 2010-10-18 · math.DG · math.AC · math.CA · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OLUYU5QARLGNLWXQTMRSYH4FH6}

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	2026-05-18T03:58:51.710337Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72e98a76008accd5daf09b232c1f853f817622366226e305a41a015bbbb80dca

Aliases

arxiv: 1010.3637 · arxiv_version: 1010.3637v1 · doi: 10.48550/arxiv.1010.3637 · pith_short_12: OLUYU5QARLGN · pith_short_16: OLUYU5QARLGNLWXQ · pith_short_8: OLUYU5QA

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/OLUYU5QARLGNLWXQTMRSYH4FH6 \
  | 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: 72e98a76008accd5daf09b232c1f853f817622366226e305a41a015bbbb80dca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2436c995deb16f7d28cdcde12fdf4cf6d93519f116e29edf47e01d96919f5da6",
    "cross_cats_sorted": [
      "math.AC",
      "math.CA",
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2010-10-18T15:57:01Z",
    "title_canon_sha256": "9b1b1abc99e6d0780b00786a69b6cf29c5d6a665785e93ef7b54eda0f601ec60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.3637",
    "kind": "arxiv",
    "version": 1
  }
}