Pith Number

pith:N6V6NXYU

pith:2021:N6V6NXYUED4QIPDXPBYR5URT7K

not attested not anchored not stored refs pending

Pseudo-isotopies and diffeomorphisms of 4-manifolds

Oliver Singh

arxiv:2111.15658 v3 · 2021-11-30 · 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{N6V6NXYUED4QIPDXPBYR5URT7K}

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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

Pseudo-isotopy versus isotopy for homeomorphisms of 4-manifolds

Receipt and verification

First computed	2026-07-05T05:15:58.108403Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6fabe6df1420f9043c7778711ed233faaa4a8470f32715463b24983343c86919

Aliases

arxiv: 2111.15658 · arxiv_version: 2111.15658v3 · doi: 10.48550/arxiv.2111.15658 · pith_short_12: N6V6NXYUED4Q · pith_short_16: N6V6NXYUED4QIPDX · pith_short_8: N6V6NXYU

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/N6V6NXYUED4QIPDXPBYR5URT7K \
  | 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: 6fabe6df1420f9043c7778711ed233faaa4a8470f32715463b24983343c86919

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea3dd5188efef2a8a283d8c9393671b6d17c75bf707f9778b2591a7d583602e7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2021-11-30T18:46:01Z",
    "title_canon_sha256": "8c65467390ced847616772551426ceed54c5758c6d6f435111b8d5fb54b9dcde"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.15658",
    "kind": "arxiv",
    "version": 3
  }
}