Pith Number

pith:V4QUZ2NC

pith:2014:V4QUZ2NCMAWJXQ47UA7GWAV5DI

not attested not anchored not stored refs pending

Invariance of Pontrjagin classes for Bott manifolds

Mikiya Masuda, Satoshi Murai, Suyoung Choi

arxiv:1401.0893 v1 · 2014-01-05 · 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{V4QUZ2NCMAWJXQ47UA7GWAV5DI}

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	2026-05-18T02:03:37.931163Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af214ce9a2602c9bc39fa03e6b02bd1a17a0b3b5a18fac785b8809d4b3556249

Aliases

arxiv: 1401.0893 · arxiv_version: 1401.0893v1 · doi: 10.48550/arxiv.1401.0893 · pith_short_12: V4QUZ2NCMAWJ · pith_short_16: V4QUZ2NCMAWJXQ47 · pith_short_8: V4QUZ2NC

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/V4QUZ2NCMAWJXQ47UA7GWAV5DI \
  | 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: af214ce9a2602c9bc39fa03e6b02bd1a17a0b3b5a18fac785b8809d4b3556249

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b296174d6a5057bd90e180e6637ee1313d0f2cc15131ade0b836470065e7a2fe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2014-01-05T14:08:05Z",
    "title_canon_sha256": "117fe98fc703d5273111658d6a93f9b79ceb0d32e3782eb0111b3a6c7f3d976b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.0893",
    "kind": "arxiv",
    "version": 1
  }
}