Pith Number

pith:L4NB4I3Q

pith:2018:L4NB4I3QUIEH42JRHFEI3DRPPT

not attested not anchored not stored refs pending

Homologies of inverse limits of groups

Danil Akhtiamov

arxiv:1901.01125 v1 · 2018-12-20 · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L4NB4I3QUIEH42JRHFEI3DRPPT}

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	2026-05-17T23:56:57.011932Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f1a1e2370a2087e693139488d8e2f7cd61b4bb705616b8c032f3c3e196506fa

Aliases

arxiv: 1901.01125 · arxiv_version: 1901.01125v1 · doi: 10.48550/arxiv.1901.01125 · pith_short_12: L4NB4I3QUIEH · pith_short_16: L4NB4I3QUIEH42JR · pith_short_8: L4NB4I3Q

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/L4NB4I3QUIEH42JRHFEI3DRPPT \
  | 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: 5f1a1e2370a2087e693139488d8e2f7cd61b4bb705616b8c032f3c3e196506fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b328a0e23c99cf9fd7b6859268b7faeef28b2cd7274d5a17a892cde17f901c5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2018-12-20T13:48:27Z",
    "title_canon_sha256": "f7940866294937552589088ba6c9190862b0f09ecc14d0f3b3eae02c8ca88ed1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.01125",
    "kind": "arxiv",
    "version": 1
  }
}