Pith Number

pith:BIPM7ELH

pith:2015:BIPM7ELHEK5S5AP2PJ24VYQNOC

not attested not anchored not stored refs pending

The cohomology ring away from 2 of configuration spaces on real projective spaces

Aldo Guzm\'an-S\'aenz, Jes\'us Gonz\'alez, Miguel Xicotencatl

arxiv:1502.04258 v2 · 2015-02-14 · 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{BIPM7ELHEK5S5AP2PJ24VYQNOC}

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	2026-05-18T01:36:51.376847Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a1ecf916722bb2e81fa7a75cae20d70a1474a94defc40fa335bee30fbb0e9a5

Aliases

arxiv: 1502.04258 · arxiv_version: 1502.04258v2 · doi: 10.48550/arxiv.1502.04258 · pith_short_12: BIPM7ELHEK5S · pith_short_16: BIPM7ELHEK5S5AP2 · pith_short_8: BIPM7ELH

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/BIPM7ELHEK5S5AP2PJ24VYQNOC \
  | 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: 0a1ecf916722bb2e81fa7a75cae20d70a1474a94defc40fa335bee30fbb0e9a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7c466f3d543bf0be8a0e1eb15adfcfa1ece0148dd3778a98d0ede240ace2ea0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2015-02-14T23:29:22Z",
    "title_canon_sha256": "095fb49f01b4ddd5453a9c4710f4a36ad1dcecced7758b1c9f307e92a06c4c69"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.04258",
    "kind": "arxiv",
    "version": 2
  }
}