Pith Number

pith:PW3EWRNB

pith:2015:PW3EWRNBH5GVLQZUDJK4SMVYI6

not attested not anchored not stored refs pending

The Tangent Search Engine: Improved Similarity Metrics and Scalability for Math Formula Search

Andrew Kane, Frank Tompa, Kenny Davila, Richard Zanibbi

arxiv:1507.06235 v1 · 2015-07-22 · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PW3EWRNBH5GVLQZUDJK4SMVYI6}

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	2026-05-18T01:36:26.329310Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7db64b45a13f4d55c3341a55c932b84786f1dab0a5d34718f8fb6a3ef56e28f6

Aliases

arxiv: 1507.06235 · arxiv_version: 1507.06235v1 · doi: 10.48550/arxiv.1507.06235 · pith_short_12: PW3EWRNBH5GV · pith_short_16: PW3EWRNBH5GVLQZU · pith_short_8: PW3EWRNB

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/PW3EWRNBH5GVLQZUDJK4SMVYI6 \
  | 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: 7db64b45a13f4d55c3341a55c932b84786f1dab0a5d34718f8fb6a3ef56e28f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc2b1db50e93e95c140a11a2de85a1c81ef746895d0f948fcfb229eeb00c7188",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2015-07-22T16:02:00Z",
    "title_canon_sha256": "ea8611ea407d1cab3f5914989b24d40ed220ff5179f90ac399a8bb365def93d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.06235",
    "kind": "arxiv",
    "version": 1
  }
}