Pith Number

pith:DRCVI5IB

pith:2014:DRCVI5IBXJQS7TAWXEHDKQIORL

not attested not anchored not stored refs pending

Semiprojectivity with and without a group action

Adam P. W. S{\o}rensen, Hannes Thiel, N. Christopher Phillips

arxiv:1403.3440 v1 · 2014-03-13 · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DRCVI5IBXJQS7TAWXEHDKQIORL}

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	2026-05-17T23:47:49.531514Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c45547501ba612fcc16b90e35410e8aecc290b423e10e1a243c718517dc09c3

Aliases

arxiv: 1403.3440 · arxiv_version: 1403.3440v1 · doi: 10.48550/arxiv.1403.3440 · pith_short_12: DRCVI5IBXJQS · pith_short_16: DRCVI5IBXJQS7TAW · pith_short_8: DRCVI5IB

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/DRCVI5IBXJQS7TAWXEHDKQIORL \
  | 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: 1c45547501ba612fcc16b90e35410e8aecc290b423e10e1a243c718517dc09c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "81a86663f79a19a53029c891c7ce173def2eb5d9bed8e0734a5f7300f0b1b2d1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2014-03-13T21:28:05Z",
    "title_canon_sha256": "c3b9065adcb9dc1702573762def1b026d1df5091a0dabf965432308eadab7479"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.3440",
    "kind": "arxiv",
    "version": 1
  }
}