Pith Number

pith:MR4XAKQY

pith:2012:MR4XAKQY5X23LKT6ATTM2HUXRN

not attested not anchored not stored refs pending

Configurations spaces and Theta_n

David Ayala, Richard Hepworth

arxiv:1202.2806 v1 · 2012-02-13 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MR4XAKQY5X23LKT6ATTM2HUXRN}

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	2026-05-18T03:34:03.388558Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6479702a18edf5b5aa7e04e6cd1e978b74d774fd435fa16ae3fe1ca0eade20bc

Aliases

arxiv: 1202.2806 · arxiv_version: 1202.2806v1 · doi: 10.48550/arxiv.1202.2806 · pith_short_12: MR4XAKQY5X23 · pith_short_16: MR4XAKQY5X23LKT6 · pith_short_8: MR4XAKQY

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/MR4XAKQY5X23LKT6ATTM2HUXRN \
  | 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: 6479702a18edf5b5aa7e04e6cd1e978b74d774fd435fa16ae3fe1ca0eade20bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4435a6543bad8af8604e06aed0f05f806f37873a42c7ef4a8287ef3e4cd15a68",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2012-02-13T18:02:27Z",
    "title_canon_sha256": "39b39164240381799fb13541fa35d6d67014ef70646559b5e644f055d654d969"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.2806",
    "kind": "arxiv",
    "version": 1
  }
}