Pith Number

pith:XRQ7TVYE

pith:2018:XRQ7TVYERG3WZNGF3I5BYDWE2X

not attested not anchored not stored refs pending

On the cohomology of comodules over smash coproducts

S. Caenepeel, T. Gu\'ed\'enon

arxiv:1805.04931 v1 · 2018-05-13 · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XRQ7TVYERG3WZNGF3I5BYDWE2X}

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	2026-05-18T00:16:04.286235Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc61f9d70489b76cb4c5da3a1c0ec4d5d80228bf58e0633d81947ee62613edb3

Aliases

arxiv: 1805.04931 · arxiv_version: 1805.04931v1 · doi: 10.48550/arxiv.1805.04931 · pith_short_12: XRQ7TVYERG3W · pith_short_16: XRQ7TVYERG3WZNGF · pith_short_8: XRQ7TVYE

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/XRQ7TVYERG3WZNGF3I5BYDWE2X \
  | 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: bc61f9d70489b76cb4c5da3a1c0ec4d5d80228bf58e0633d81947ee62613edb3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba105e314839fd0986ddbfa4c31057157909de6a3da1a415859dbef8c059de68",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2018-05-13T19:12:32Z",
    "title_canon_sha256": "ca5faa401654ef21dbc85ffea7cda7b7708dcbf02fc26e5c4eefa6c64d3804e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.04931",
    "kind": "arxiv",
    "version": 1
  }
}