Pith Number

pith:IVTD4ZRB

pith:2026:IVTD4ZRBEM7USTOBONH5AMN444

not attested not anchored not stored refs pending

Some aspects of topological dynamics of Polish groups (with an introduction to descriptive set theory)

Julien Melleray

arxiv:2602.23799 v2 · 2026-02-27 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IVTD4ZRBEM7USTOBONH5AMN444}

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	2026-06-19T16:12:51.803218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45663e6621233f494dc1734fd031bce711991a335e99a14514efc17318766116

Aliases

arxiv: 2602.23799 · arxiv_version: 2602.23799v2 · doi: 10.48550/arxiv.2602.23799 · pith_short_12: IVTD4ZRBEM7U · pith_short_16: IVTD4ZRBEM7USTOB · pith_short_8: IVTD4ZRB

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/IVTD4ZRBEM7USTOBONH5AMN444 \
  | 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: 45663e6621233f494dc1734fd031bce711991a335e99a14514efc17318766116

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "628cb5d3ca2f9b1e00ae2e1b4b55a4b05fa1a5d431426bde08b3d39cc1fe9318",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2026-02-27T08:40:06Z",
    "title_canon_sha256": "c289357879c308649002a7a39cab657e64bd8de5b6cb653b02a8eb3656fb9557"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.23799",
    "kind": "arxiv",
    "version": 2
  }
}