Pith Number

pith:3NE7QW4Z

pith:1996:3NE7QW4ZAI2EQ6TVREXVYKPWM5

not attested not anchored not stored refs pending

Excision in Banach simplicial and cyclic cohomology

Zinaida A. Lykova

arxiv:math/9606212 v1 · 1996-06-07 · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3NE7QW4ZAI2EQ6TVREXVYKPWM5}

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	2026-05-18T01:05:47.321202Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db49f85b990234487a75892f5c29f6674a8bc73c3ad1bc7f57c11153d8b4bcb1

Aliases

arxiv: math/9606212 · arxiv_version: math/9606212v1 · doi: 10.48550/arxiv.math/9606212 · pith_short_12: 3NE7QW4ZAI2E · pith_short_16: 3NE7QW4ZAI2EQ6TV · pith_short_8: 3NE7QW4Z

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/3NE7QW4ZAI2EQ6TVREXVYKPWM5 \
  | 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: db49f85b990234487a75892f5c29f6674a8bc73c3ad1bc7f57c11153d8b4bcb1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2e0ec9df1a1730ef2060ee0c01f6ca67f108b72056a0add57cc91834d5d427c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.OA",
    "submitted_at": "1996-06-07T00:00:00Z",
    "title_canon_sha256": "cf98ec17a07007d7afdd68e3c1b73d25c59ea7a303b74be6c1ccc71362766bb5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9606212",
    "kind": "arxiv",
    "version": 1
  }
}