Pith Number

pith:D6UHID7J

pith:2011:D6UHID7JGYZF7TR663KRBQ3B47

not attested not anchored not stored refs pending

Weighted projective spaces and iterated Thom spaces

Anthony Bahri, Matthias Franz, Nigel Ray

arxiv:1109.2359 v1 · 2011-09-11 · 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{D6UHID7JGYZF7TR663KRBQ3B47}

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	2026-05-18T02:53:15.765684Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1fa8740fe936325fce3ef6d510c361e7df06f5d9c769be1d1f71041bbb292cda

Aliases

arxiv: 1109.2359 · arxiv_version: 1109.2359v1 · doi: 10.48550/arxiv.1109.2359 · pith_short_12: D6UHID7JGYZF · pith_short_16: D6UHID7JGYZF7TR6 · pith_short_8: D6UHID7J

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/D6UHID7JGYZF7TR663KRBQ3B47 \
  | 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: 1fa8740fe936325fce3ef6d510c361e7df06f5d9c769be1d1f71041bbb292cda

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ac1c82c467ac7c8135dcff83f4e0bfa18bd9910353a4e5d6ba075a46dd8face",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2011-09-11T22:44:40Z",
    "title_canon_sha256": "4dc0e3fbcd0302aef45606ab393ccdb6a30f53adabe9ac581b08569f291a4374"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.2359",
    "kind": "arxiv",
    "version": 1
  }
}