Pith Number

pith:FXBZDGWL

pith:2021:FXBZDGWLOJZBLWO3ADNHB3EWZ5

not attested not anchored not stored refs pending

Extracting the Unknown from Long Math Problems

Ndapa Nakashole

arxiv:2103.12048 v3 · 2021-03-22 · cs.CL · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FXBZDGWLOJZBLWO3ADNHB3EWZ5}

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

Quantum diffusion and delocalization in one-dimensional band matrices via the flow method

Receipt and verification

First computed	2026-07-05T03:35:28.020617Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2dc3919acb727215d9db00da70ec96cf79827c66b38f45ffbb52c1550ce986ea

Aliases

arxiv: 2103.12048 · arxiv_version: 2103.12048v3 · doi: 10.48550/arxiv.2103.12048 · pith_short_12: FXBZDGWLOJZB · pith_short_16: FXBZDGWLOJZBLWO3 · pith_short_8: FXBZDGWL

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/FXBZDGWLOJZBLWO3ADNHB3EWZ5 \
  | 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: 2dc3919acb727215d9db00da70ec96cf79827c66b38f45ffbb52c1550ce986ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "410c34f0ff014bdadc346cb2ae6c980cc7ac5938862cdd1bb6b71c81b6ad1105",
    "cross_cats_sorted": [
      "math.HO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-03-22T17:51:10Z",
    "title_canon_sha256": "8abff512f62ad5dfad552365041d46cdcd88cbbbce05504d95708a610d8dd66c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.12048",
    "kind": "arxiv",
    "version": 3
  }
}