Pith Number

pith:RTTFYKOK

pith:2011:RTTFYKOKB6ARVJ5TNU4CWQVC4B

not attested not anchored not stored refs pending

Is Lebesgue measure the only $\sigma$-finite invariant Borel measure?

M\'arton Elekes, Tam\'as Keleti

arxiv:1109.5306 v1 · 2011-09-24 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RTTFYKOKB6ARVJ5TNU4CWQVC4B}

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	2026-05-18T04:12:20.079932Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ce65c29ca0f811aa7b36d382b42a2e04bae3e34f0c1aab0673376eba8b8b427

Aliases

arxiv: 1109.5306 · arxiv_version: 1109.5306v1 · doi: 10.48550/arxiv.1109.5306 · pith_short_12: RTTFYKOKB6AR · pith_short_16: RTTFYKOKB6ARVJ5T · pith_short_8: RTTFYKOK

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/RTTFYKOKB6ARVJ5TNU4CWQVC4B \
  | 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: 8ce65c29ca0f811aa7b36d382b42a2e04bae3e34f0c1aab0673376eba8b8b427

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d0e26deef90e84b35b15cbf9c62d5d08a7a3c3fce1fe4f92257b6de7d0f4add",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2011-09-24T20:53:39Z",
    "title_canon_sha256": "e7a027d532f5f6f83b1eeb73bc08db08e501d6ec83b62a58e39fa763f53c36c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.5306",
    "kind": "arxiv",
    "version": 1
  }
}