Pith Number

pith:7CXVNYPZ

pith:2018:7CXVNYPZEY577D5ZRRHSCPE766

not attested not anchored not stored refs pending

The Klein four slices of positive suspensions of HF_2

Bertrand Guillou, Carolyn Yarnall

arxiv:1808.05547 v2 · 2018-08-16 · 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{7CXVNYPZEY577D5ZRRHSCPE766}

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	2026-05-18T00:06:55.687975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8af56e1f9263bff8fb98c4f213c9ff787a576ef8f3e425258058d3b2d44f75f

Aliases

arxiv: 1808.05547 · arxiv_version: 1808.05547v2 · doi: 10.48550/arxiv.1808.05547 · pith_short_12: 7CXVNYPZEY57 · pith_short_16: 7CXVNYPZEY577D5Z · pith_short_8: 7CXVNYPZ

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/7CXVNYPZEY577D5ZRRHSCPE766 \
  | 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: f8af56e1f9263bff8fb98c4f213c9ff787a576ef8f3e425258058d3b2d44f75f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "79d89f667ca7d4494dba4ff00777397ed5eb70406f3e4ef2ab258bf2ce49a6f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2018-08-16T15:44:10Z",
    "title_canon_sha256": "9c290f49fe133abee2312ca2895c1f7559e228c72be7a0e833837c225bee3dd7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.05547",
    "kind": "arxiv",
    "version": 2
  }
}