Pith Number

pith:T7L65BMI

pith:2012:T7L65BMINZBEDN7A4ZWLS4QZXQ

not attested not anchored not stored refs pending

Surfaces Meeting Porous Sets in Positive Measure

Gareth Speight

arxiv:1201.2376 v2 · 2012-01-11 · math.FA · math.CA · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T7L65BMINZBEDN7A4ZWLS4QZXQ}

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	2026-05-18T02:44:07.264134Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9fd7ee85886e4241b7e0e66cb97219bc0d9cac555d3ff3e888db5cccc80d66fc

Aliases

arxiv: 1201.2376 · arxiv_version: 1201.2376v2 · doi: 10.48550/arxiv.1201.2376 · pith_short_12: T7L65BMINZBE · pith_short_16: T7L65BMINZBEDN7A · pith_short_8: T7L65BMI

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/T7L65BMINZBEDN7A4ZWLS4QZXQ \
  | 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: 9fd7ee85886e4241b7e0e66cb97219bc0d9cac555d3ff3e888db5cccc80d66fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "306c70e72dab6ec22b06d9be0223f3bfdf04c9b8a55a97d91e139f73a1eec428",
    "cross_cats_sorted": [
      "math.CA",
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2012-01-11T18:58:27Z",
    "title_canon_sha256": "c6d4c8613c4900098f0cffe476a71b044fc13b5dbf169b7dec4e8e8064a909f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.2376",
    "kind": "arxiv",
    "version": 2
  }
}