Pith Number

pith:DLACS53B

pith:2013:DLACS53BKR5JKSQ3HS3GFJEC2V

not attested not anchored not stored refs pending

Algebra and logic. Some problems

Boris Plotkin

arxiv:1306.0778 v1 · 2013-06-04 · 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{DLACS53BKR5JKSQ3HS3GFJEC2V}

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	2026-05-18T03:21:53.230385Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ac0297761547a954a1b3cb662a482d55e0e1138780457773babd736b8bea43b

Aliases

arxiv: 1306.0778 · arxiv_version: 1306.0778v1 · doi: 10.48550/arxiv.1306.0778 · pith_short_12: DLACS53BKR5J · pith_short_16: DLACS53BKR5JKSQ3 · pith_short_8: DLACS53B

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/DLACS53BKR5JKSQ3HS3GFJEC2V \
  | 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: 1ac0297761547a954a1b3cb662a482d55e0e1138780457773babd736b8bea43b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d2ea25d832fa69adf0e2f4b1eadd170ba5890abca8dd1c069b129f5d644b607",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2013-06-04T13:23:42Z",
    "title_canon_sha256": "8c458f71e21d1234f845d89ff3fb62ef6b6ebd297b0a2e152ba1f3927632aab7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.0778",
    "kind": "arxiv",
    "version": 1
  }
}