Pith Number

pith:B5Y5FUDW

pith:2018:B5Y5FUDWW2XOY7H5AMVWAQCZ7J

not attested not anchored not stored refs pending

Cohomology of torus manifold bundles

Bivas Khan, Jyoti Dasgupta, V. Uma

arxiv:1804.05147 v2 · 2018-04-14 · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{B5Y5FUDWW2XOY7H5AMVWAQCZ7J}

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	2026-05-18T00:05:23.614970Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f71d2d076b6aeec7cfd032b604059fa6e0d0703b03a0af9b7395ece3ea956a8

Aliases

arxiv: 1804.05147 · arxiv_version: 1804.05147v2 · doi: 10.48550/arxiv.1804.05147 · pith_short_12: B5Y5FUDWW2XO · pith_short_16: B5Y5FUDWW2XOY7H5 · pith_short_8: B5Y5FUDW

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/B5Y5FUDWW2XOY7H5AMVWAQCZ7J \
  | 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: 0f71d2d076b6aeec7cfd032b604059fa6e0d0703b03a0af9b7395ece3ea956a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "481f02962cf4a6b3d025d99d63b1a98ca4c2760f9ebad9d71f051bd743a13d09",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2018-04-14T01:30:07Z",
    "title_canon_sha256": "b4b2872e800db81eab2bb1f8089aec08e7cbd9c4031099d272346380be30418d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.05147",
    "kind": "arxiv",
    "version": 2
  }
}