Pith Number

pith:CQF6UHHO

pith:2017:CQF6UHHOKYH4OLRHHZIYGANB6N

not attested not anchored not stored refs pending

On Fuchs' Problem about the group of units of a ring

Ilaria Del Corso, Roberto Dvornicich

arxiv:1711.10365 v1 · 2017-11-27 · math.AC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CQF6UHHOKYH4OLRHHZIYGANB6N}

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	2026-05-18T00:24:48.061652Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

140bea1cee560fc72e273e518301a1f341c9d88a2ca40786f1c5d5149fb48e30

Aliases

arxiv: 1711.10365 · arxiv_version: 1711.10365v1 · doi: 10.48550/arxiv.1711.10365 · pith_short_12: CQF6UHHOKYH4 · pith_short_16: CQF6UHHOKYH4OLRH · pith_short_8: CQF6UHHO

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/CQF6UHHOKYH4OLRHHZIYGANB6N \
  | 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: 140bea1cee560fc72e273e518301a1f341c9d88a2ca40786f1c5d5149fb48e30

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "861643ae9769b310611749ea4263762f19141ac906dd884ab854329b5243d811",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "math.AC",
    "submitted_at": "2017-11-27T14:54:10Z",
    "title_canon_sha256": "e47ff39936857121a935d8a887feaebc78f3703fcaa2f1925e214ac3bb85c559"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.10365",
    "kind": "arxiv",
    "version": 1
  }
}