Pith Number

pith:3GVN7QCT

pith:2025:3GVN7QCTGPVA5KL3FCNEMY3Q2B

not attested not anchored not stored refs pending

Isomorphism of \'etale fundamental groups lifts to isomorphism of stratified fundamental group

A.J. Parameswaran, Indranil Biswas, Manish Kumar

arxiv:2506.03829 v1 · 2025-06-04 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3GVN7QCTGPVA5KL3FCNEMY3Q2B}

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	2026-07-05T11:15:52.495882Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9aadfc05333ea0ea97b289a466370d0728c06aef0edc58bc733e09077e641bd

Aliases

arxiv: 2506.03829 · arxiv_version: 2506.03829v1 · doi: 10.48550/arxiv.2506.03829 · pith_short_12: 3GVN7QCTGPVA · pith_short_16: 3GVN7QCTGPVA5KL3 · pith_short_8: 3GVN7QCT

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/3GVN7QCTGPVA5KL3FCNEMY3Q2B \
  | 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: d9aadfc05333ea0ea97b289a466370d0728c06aef0edc58bc733e09077e641bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c373dc4533c5803d53c002fd4cd95b9b883d275ab28b8458ca64a9ca3f6de19d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2025-06-04T10:57:54Z",
    "title_canon_sha256": "841a19b6688247c5c25dd8b6ba3d243a0681fe95c3ac6f737d6a626e7bac828f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.03829",
    "kind": "arxiv",
    "version": 1
  }
}