Pith Number

pith:LRA5AL47

pith:2015:LRA5AL476M2YFN6SSUUSVPKOUH

not attested not anchored not stored refs pending

Reducibility of pointlike problems

J. Almeida, J. C. Costa, M. Zeitoun

arxiv:1507.03076 v1 · 2015-07-11 · 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{LRA5AL476M2YFN6SSUUSVPKOUH}

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	2026-05-18T01:24:10.704083Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c41d02f9ff33582b7d295292abd4ea1f76ad4d8009bbc1cc43e679d2c410d2a

Aliases

arxiv: 1507.03076 · arxiv_version: 1507.03076v1 · doi: 10.48550/arxiv.1507.03076 · pith_short_12: LRA5AL476M2Y · pith_short_16: LRA5AL476M2YFN6S · pith_short_8: LRA5AL47

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/LRA5AL476M2YFN6SSUUSVPKOUH \
  | 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: 5c41d02f9ff33582b7d295292abd4ea1f76ad4d8009bbc1cc43e679d2c410d2a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8062abfd9e63d0849b2331c8929226203dd59576fead06941e4f83ec00182b6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2015-07-11T08:40:03Z",
    "title_canon_sha256": "0f5a599a1ddd3c9fded8e40b9e828a3cd58a06105da0b07b8a2372a487d6ce99"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.03076",
    "kind": "arxiv",
    "version": 1
  }
}