Pith Number

pith:LT2XNPZO

pith:2025:LT2XNPZO73BVF6MWOKYJVGIL6N

not attested not anchored not stored refs pending

Pontryagin-Weiss classes and a rational decomposition of spaces of homeomorphisms

Alexander Kupers, Manuel Krannich

arxiv:2504.20265 v2 · 2025-04-28 · math.AT · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LT2XNPZO73BVF6MWOKYJVGIL6N}

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.

Cited by

1 paper in Pith

Framed configuration spaces and exotic spheres

Receipt and verification

First computed	2026-07-05T11:34:50.537411Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5cf576bf2efec352f99672b09a990bf34274e708b8ae8abe0c6a5bfa2cfc1437

Aliases

arxiv: 2504.20265 · arxiv_version: 2504.20265v2 · doi: 10.48550/arxiv.2504.20265 · pith_short_12: LT2XNPZO73BV · pith_short_16: LT2XNPZO73BVF6MW · pith_short_8: LT2XNPZO

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/LT2XNPZO73BVF6MWOKYJVGIL6N \
  | 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: 5cf576bf2efec352f99672b09a990bf34274e708b8ae8abe0c6a5bfa2cfc1437

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1adb16d2ca629a06f4af0a6f80264b6d3b0db663f35abe0455f529d979953f36",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2025-04-28T21:12:57Z",
    "title_canon_sha256": "1ca7a150e6a29b781f068dd0b29f3d123358e2ef12f66e4befe59ee9208d89d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.20265",
    "kind": "arxiv",
    "version": 2
  }
}