Pith Number

pith:YR3IZBMI

pith:2014:YR3IZBMIO4S4QH22IGXRNGA53G

not attested not anchored not stored refs pending

A 4-sphere with non central radius and its instanton sheaf

Chiara Pagani, Lucio S. Cirio

arxiv:1402.6609 v2 · 2014-02-26 · math.QA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YR3IZBMIO4S4QH22IGXRNGA53G}

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	2026-05-18T01:44:26.848075Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4768c85887725c81f5a41af16981dd9a514ccf6a188e559c99011e7602d947d

Aliases

arxiv: 1402.6609 · arxiv_version: 1402.6609v2 · doi: 10.48550/arxiv.1402.6609 · pith_short_12: YR3IZBMIO4S4 · pith_short_16: YR3IZBMIO4S4QH22 · pith_short_8: YR3IZBMI

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/YR3IZBMIO4S4QH22IGXRNGA53G \
  | 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: c4768c85887725c81f5a41af16981dd9a514ccf6a188e559c99011e7602d947d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a39d5a68943f2a05699e5e2d930e9d42074791233ee4e3ace4e2d03f15fdb6ef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.QA",
    "submitted_at": "2014-02-26T16:55:55Z",
    "title_canon_sha256": "449498d1f7c601ac35203a0c8fcd9bcfd8d8865b3abfc0f2bba616c02752ab15"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.6609",
    "kind": "arxiv",
    "version": 2
  }
}