Pith Number

pith:PPAQWNZQ

pith:2019:PPAQWNZQYC5FJCT7AMCXFIN7HY

not attested not anchored not stored refs pending

Subgroups of the Group of Formal Power Series with the Big Powers Condition

A. Brudnyi

arxiv:1908.04918 v1 · 2019-08-14 · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PPAQWNZQYC5FJCT7AMCXFIN7HY}

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

Surface Groups In The Group Of Germs Of Analyticdiffeomorphisms In One Variable

Receipt and verification

First computed	2026-07-04T23:55:58.000525Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bc10b3730c0ba548a7f030572a1bf3e0e6da108d5e090604c8646dcf53f1c53

Aliases

arxiv: 1908.04918 · arxiv_version: 1908.04918v1 · doi: 10.48550/arxiv.1908.04918 · pith_short_12: PPAQWNZQYC5F · pith_short_16: PPAQWNZQYC5FJCT7 · pith_short_8: PPAQWNZQ

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/PPAQWNZQYC5FJCT7AMCXFIN7HY \
  | 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: 7bc10b3730c0ba548a7f030572a1bf3e0e6da108d5e090604c8646dcf53f1c53

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f930a715788afb9fadfae352ae2c41f23c763d5e01bb76c5f66dbe62dc97d54b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2019-08-14T01:51:10Z",
    "title_canon_sha256": "06cbe0e72dc5919f2fe65da773cae03b7cce4303e506dbf1feba6bfff1bc7e10"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04918",
    "kind": "arxiv",
    "version": 1
  }
}